Which pest foams claim a pesticide inside the foam?

Sprayman Pest Blocker, Kraken Bond PestSafe, Stanley F993 and Akfix 895 say, on the brand store or the data sheet, that the foam contains an EPA-registered pesticide, although Kraken Bond PestSafe’s own data sheet carries a bullet reading "Long-Lasting Pesticide Free"; Kraken Bond Pro PestSafe says "special formula" on its sheet and pesticide on its store. None names the active ingredient, which is the one thing a buyer could look up for a treated article, and none of their Amazon listings repeats the claim. Where a can goes further and says it keeps pests out of the building, a registration number of its own would be the thing to look for, and none publishes one.

Which pest foams claim no pesticide?

Great Stuff PRO Pestblock says "pesticide-free" and that the barrier is the seal. Loctite Tite Foam Pest Block says the same, and its sheet adds that the Combat endorsement on the label comes from another Henkel brand sold separately. BEEST FullStop Pest Block, new on the BEEST store in September 2026, names no pesticide either: it is sold as a kit in which steel wool packed into the gap is the barrier and the foam seals over it. None of these claims needs a registration number, because none claims a pesticide.

Why does the same Kraken Bond can have three names?

It is PestSafe on the brand store and Pestblokc or Pestblock on Amazon, and the EPA sentence that appears on the store does not appear on the marketplace listings. We record the difference and its dates; we do not know the reason, and the seller has not been asked. For a buyer the consequence is practical: a document filed under one name may not obviously belong to a can sold under another.

What is the difference between a pesticide and a device under US law?

Under FIFRA a pesticide is a substance or mixture intended to prevent, destroy, repel or mitigate a pest, and it requires EPA registration. A device is an instrument or contrivance represented for that purpose that works by physical or mechanical means; devices are not registered, and are produced in an establishment carrying an EPA establishment number that identifies the factory rather than reviewing the product. An ordinary sealant does not become a device just because it fills a hole. There is a third category that most of these cans fall into, and it is the one that matters most: the treated article. Under 40 CFR 152.25(a), an article treated with a registered pesticide to protect the article itself is exempt from registration. A foam whose pesticide is there to stop insects eating the foam is a treated article, and it will never carry a registration number of its own, because it does not need one. What it should tell you is which registered active ingredient it contains, because that is the only part a buyer can look up. A can that goes further and says it will control pests in your house has stepped outside the exemption, and that claim does need a registration number behind it.

Can I use pest block foam next to a baseboard heater, radiator or hot water pipe?

None of the pest block documents we read mentions heaters, radiators or baseboards by name, so the figure to compare is each cured foam’s temperature range. Sprayman’s Pest Blocker sheet and both Kraken Bond PestSafe sheets give -40 to 176 F, Stanley’s F993 sheet gives -103 to 239 F, Great Stuff PRO Pestblock’s product page says not above 240 F, and BEEST’s store page for FullStop Pest Block gives -22 to 176 F; Akfix 895 has only a safety data sheet, with no cured-foam figure. BEEST’s page also says to keep the foam away from "open flame and heat sources during application and until fully cured," and three of the four pest data sheets list "water pipes" among their uses without separating hot from cold. The full can has its own limit: the Sprayman, Kraken Bond and Stanley sheets all say not to expose it to temperatures above 122 F.

Is it safe to spray pest block foam behind a stove or around a gas line?

None of the pest block documents we read mentions stoves, ovens or gas lines, either as a use or as a place to avoid; what they print is a flammability warning for the can. Stanley’s F993 safety data sheet classes it "H222 Extremely flammable aerosol" and says "Keep away from heat, hot surfaces, sparks, open flames and other ignition sources," and Great Stuff PRO Pestblock’s safety data sheet adds that "Vapors are heavier than air and may travel a long distance and accumulate in low lying areas." The Sprayman, Kraken Bond and Stanley data sheets carry their own keep-away-from-ignition lines. For the cured foam, the only fire class on a pest data sheet is Stanley F993’s "Conforms to fire class B3 according to DIN 4102-1," and B3 is the lowest class of that standard.

Can I use pest block foam around electrical wires, outlets or conduit?

All four pest block data sheets we read name electrical work as a use, and none goes further. Sprayman’s Pest Blocker sheet and Stanley’s F993 sheet say the foam can go "around pipes/electrical penetrations" and list "Insulating electrical outlets and water pipes," Kraken Bond’s SF 411 sheet names "electrical penetrations" and the same outlet line, and its SF 412 gun sheet lists "Around pipes and electrical outlets." None of them mentions conduit, wire insulation or foam inside a box, and no data sheet was found for Great Stuff PRO Pestblock, Akfix 895 or BEEST FullStop Pest Block. Questions about boxes and conduit under the electrical code go to the local code official.

Should I stuff steel wool or copper mesh into the hole before I foam it?

None of the four pest block data sheets we read, from Sprayman, Kraken Bond and Stanley, mentions steel wool, copper mesh or any other filler, so the method is not part of what those makers document. The one product in the set built around it is BEEST FullStop Pest Block, which its store sells as "a two-material system for sealing rodent entry points," with steel wool packed into the gap first and foam over the top, in kits of "3 cans with 6 steel wool rolls, 4 with 6, or 6 with 9." Great Stuff PRO Pestblock, which claims no pesticide, is also sold on Amazon in reseller kits with a gun, cleaner and copper mesh. None of the pest documents we read prints a chew test for the foam, the wool or the mesh.

Does pest block foam keep out ants, roaches, wasps and other insects?

The makers name a short list of insects, and none names wasps or hornets. Sprayman’s Pest Blocker sheet says the foam "also blocks ants, roaches, spiders and bees," Stanley’s F993 and Kraken Bond’s SF 411 sheets name the same four, and Kraken Bond’s SF 412 gun sheet adds mice, birds and bats and says the foam helps block them "by sealing gaps, cracks, and openings." Great Stuff PRO Pestblock’s page says it "Controls critters, bugs, rats, and other pests from your home" and "Won’t harm bees," and BEEST’s FullStop can says "Blocks insects." None of these documents names a test behind the insect claim.

What is the difference between pest block foam and regular expanding foam?

On Stanley’s paperwork the pest can differs from the regular can by one listed ingredient and its pest wording. Stanley’s F993 Pest Block safety data sheet lists "1,4-dichlorobenzene" at "0.5-5" percent, while Stanley’s F905 Gaps & Cracks safety data sheet lists the same isocyanate and propellants without it; of the 26 safety data sheets we read, only F993 and Akfix 895 list that ingredient, and neither says it is the pesticide its maker claims. The two Stanley data sheets otherwise print the same light yellow color, the same "4.35 psi (30 kPa)" compression strength, the same "~4.1 per in." R-value and the same -103 to 239 F cured range, and only F905 carries a UL 723 result. Great Stuff PRO Pestblock claims no pesticide at all, "Pest-free without the pesticides," and its safety data sheet lists no 1,4-dichlorobenzene.

Foam sealants by job · Intake screened September 7, 2026 · Listings read October 29, 2026

Best Pest Block Foam

Category evidence order · #1

Sprayman Pest Blocker Foam

3 of 4 confirmed$17.991 x 12 oz

The biggest pest seller, 1K+ bought; the sheet protects the foam in one sentence and blocks insects in the next, and names no ingredient.

Check price on Amazon Why it’s our pick

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Every pest block can from the September intake describes itself, in its own title, as a gaps and cracks filler, and the one added since, BEEST's steel wool and foam kit, is sold as a two-material system. The pest claim is layered on top, and it comes in three kinds, each checked a different way. A physical barrier claim says the seal itself keeps pests out: no pesticide, no registration, and the thing to check is the gap limit the seal works within. A treated-article claim says the foam contains a registered pesticide to protect the foam itself; under 40 CFR 152.25(a) that article is exempt from registration, so it carries no registration number of its own, and the thing to check is the named active ingredient. A pest control claim says the foam controls pests in the building; that claim sits outside the exemption and is the one kind that would need an EPA registration number of its own. This page sorts the cans by which claim their own words make and by what stands behind it.

Straight to the cans

The three this page puts first

Ordered by the evidence each can publishes, not by price. Every product, the full table and the records are below.

Sprayman Pest Blocker Foam

The biggest pest seller, 1K+ bought; the sheet protects the foam in one sentence and blocks insects in the next, and names no ingredient.

3 of 4 confirmed

$17.991 x 12 oz

Check price
Kraken Bond PestSafe Foam Sealant

Documented as a filler, with a bead yield on a dated sheet; the pest side names no active ingredient, and the can carries three names.

3 of 4 confirmed

$12.991 x 12 oz

Check price
Stanley F993 Pest Block

The only pest sheet with a gap range, 1 to 3 in, and a pesticide statement in the sheet itself; the ingredient is not named.

3 of 4 confirmed

$12.991 x 12 oz

Check price

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Foam alone is not a rodent barrier.

Rodents gnaw cured polyurethane foam. Exclusion is done with hardware cloth, metal mesh or flashing, and by removing whatever draws the animal in; the foam seals the air gap around that barrier. Every can on this page is used that way by the people who do this for a living, whatever the label says about mice.

How this page is ordered

Four things we could confirm, and nothing we could not

Brand data sheetA technical data sheet published by the maker for this product. A safety data sheet or a web page is recorded but does not earn the mark, and where a sheet carries no date or revision the record says so.
Claim checkableFor a pest foam the mark needs the registered active ingredient named, or, where the can claims no pesticide at all, the gap limit its seal works within, stated in a dated document. No product in this set does either, so the column is empty: six name a pesticide without naming the ingredient, one states its gap limit on a web page rather than in a sheet, and BEEST's new kit claims no pesticide and states no gap limit anywhere.
Brand-channel sellerThe Amazon seller of record is the brand or a storefront that carries only that brand in our intake. A multi-brand reseller or an unbranded trading company does not earn it.
100 or more ratingsOn the listing we link. A feedback base, not a verdict; how we read reviews is a separate guide.

Why that is the test. Which test applies depends on the claim. A can that says only that the cured foam itself resists attack is describing a treated article: under 40 CFR 152.25(a) an article treated to protect the article itself is exempt from registration, so there is no registration number for the can to publish, and the ingredient is the only part a buyer can check. A can that claims to control pests in the building has stepped outside that exemption, and there the mark would need an EPA registration number.

Products are ordered by how many of four things we could confirm, then by the size of the buyer-feedback base: a dated technical data sheet from the brand, a category claim you can check against a figure in a dated document, a marketplace seller that is the brand or its single-brand distributor, and at least 100 ratings on the listing we link. This is not a performance score. Nothing on this page was applied or tested by us.

Where the line runs

Registration is not the problem. Which claim is being made is.

A pesticide inside the foam does not stop anyone selling it. Under 40 CFR 152.25(a) an article treated with a registered pesticide to protect the article itself is exempt from registration, so a can that says it keeps mice from eating the foam needs no number of its own and is doing nothing wrong. The exemption stops at the foam. A can that says it keeps animals out of your building has made a different claim, and that one is not exempt. Below is which side each can's own words fall on, and we have tested none of them.

Sprayman Pest Blocker Foam Claims to protect the building

contains an EPA-registered pesticide for blocking pests as rodent resistant insulation

Blocking pests, not protecting the foam. That is a claim about the building. The maker's own data sheet straddles the line in two consecutive sentences: the pesticide "protects the foam from attack by mice, birds, bats and tree squirrels," which is the exempt claim, and then "it also blocks ants, roaches, spiders and bees," which is not. The store keeps only the second half.

Kraken Bond PestSafe Foam Sealant Protects the foam

containing an that protects the foam from attack by mice, birds, bats, and tree squirrels

The sheet’s own sentence, missing the word that would name what the foam contains. The same sheet carries a bullet reading "Long-Lasting Pesticide Free", while the brand store says "Formulated with an EPA-registered pesticide" on a page selling pest control: the two documents disagree on the fact this section is about.

Stanley F993 Pest Block Protects the foam

Contains EPA-registered pesticide that protects foam from attack by mice and other pests.

Protects the foam. That is the treated-article wording exactly, and the exemption covers it.

Akfix 895 Mouse & Pest Barrier Claims to protect the building

Mouse & Pest Barrier

A barrier against pests is a claim about the space, and the store gives nothing further.

Kraken Bond Pro PestSafe Foam Claims to protect the building

Contains a special formula for pest protection. Helps block the entry of pests.

The sheet does not say pesticide; the store does, and names no ingredient. Neither says the foam is what is protected: "block the entry of pests" is about what comes into the building, the same shape of claim as Sprayman's, so the words fall on the building side of the line with the target and the ingredient both unstated.

Sprayman Pro Pest Blocker Foam Claims to protect the building

keeps pests like mice, rats, birds, bats, ants, and roaches where they belong: out

Six animals, kept out of a house. Nothing in that sentence is about protecting the foam. The maker's own data sheet, which serves this can and the straw can, opens with the exempt version instead: the pesticide "protects the foam from attack by mice, birds, bats and tree squirrels." The store took the claim further than the sheet does.

Great Stuff PRO Pestblock Says it has no pesticide

Pest-free without the pesticides. Controls critters, bugs, rats, and other pests from your home.

It says it has no pesticide, so this is a physical barrier claim and no registration number applies to it. "Controls ... pests from your home" is an effectiveness statement that goes further than a seal does; whether represented-purpose wording of that kind brings a pesticide-free article under FIFRA is a question for a regulatory specialist, and this page does not decide it. It is recorded as an open question, not as a finding against the can.

BEEST FullStop Pest Block Foam Says it has no pesticide

Lock in protection. Lock out pests.

No pesticide is named or claimed anywhere, so no registration number applies: the barrier is the steel wool and the foam seals over it. "Blocks insects" on the can goes further than a seal does, the same shape of wording as Great Stuff PRO’s, and whether wording of that kind carries a regulatory consequence is a question for a regulatory specialist that this page does not decide.

None of this says a can is unlawful, and we are not in a position to say so: we have not tested a can, no maker names its active ingredient, and the exemption also depends on that ingredient being registered for this use, which is the part nobody publishes. What it does say is that two different promises are being made with the same three words, and the one most buyers are reading is the one the exemption does not cover.

At a glance

8 pest block products, in evidence order

The number in the first column is a position, not a score: products with more of the four things confirmed come first, and ties are broken by how many people have rated the product. Under each heading is how many products on this page cleared that test. A circle means we looked and it was not there. Prices are the October 29, 2026 snapshot for the cheapest bare-can listing we hold; ratings were read October 29, 2026. Prices are snapshots, each dated where it appears, not live figures, so check the seller before you pay. Tap a name for the full record.

#	Product	Format	What it namesfor the pest claim	Ratings4 of 8 over 100	Cheapest packwe could verify
Straw cans, nothing else to buy
1	Sprayman Pest Blocker Foam Sprayman · also gaps and cracks The biggest pest seller, 1K+ bought; the sheet protects the foam in one sentence and blocks insects in the next, and names no ingredient.	Straw, 12 oz	Pesticide, for blocking pests	754	$17.991 x 12 oz
2	Kraken Bond PestSafe Foam Sealant Kraken Bond · also gaps and cracks Documented as a filler, with a bead yield on a dated sheet; the pest side names no active ingredient, and the can carries three names.	Straw, 12 oz	Store: pesticide. Sheet: pesticide free	296	$12.991 x 12 oz
3	Stanley F993 Pest Block Stanley · also gaps and cracks The only pest sheet with a gap range, 1 to 3 in, and a pesticide statement in the sheet itself; the ingredient is not named.	Straw, 12 oz	Pesticide, protects the foam	258	$12.991 x 12 oz
4	Akfix 895 Mouse & Pest Barrier Akfix · also gaps and cracks 159 ratings and a "TDS" button that opens a 2022 safety data sheet; a pesticide is claimed with no ingredient named.	Straw, 12 oz	Sold as a pest barrier	170	$13.991 x 12 oz
5	BEEST FullStop Pest Block Foam BEEST New, and sold only on the BEEST store as a steel wool and foam kit; no pesticide, no data sheet, no gap size and no reviews yet.	Straw, 12 oz	No pesticide, steel wool is the barrier	0	brand storeno marketplace listing
Gun cans, a foam gun is needed
1	Kraken Bond Pro PestSafe Foam Kraken Bond · also gaps and cracks Gun version whose sheet says "special formula" while the store says pesticide; neither names an ingredient. Nine ratings.	Gun, 24 oz	Sheet says formula, store says pesticide	12	$19.991 x 24 oz
2	Sprayman Pro Pest Blocker Foam Sprayman · also gaps and cracks Gun version, $19.99 bare or $44.95 with gun and cleaner on September 9; the store names six animals kept out, the sheet says the pesticide protects the foam.	Gun, 24 oz	Pesticide, keeps six animals out	0	no price
3	Great Stuff PRO Pestblock Great Stuff PRO · also gaps and cracks Pesticide-free gray 3 in gun foam whose pest claim is the seal itself; the 3 in limit is on a web page, not in a data sheet.	Gun, 20 oz	No pesticide, the seal is the claim	34	$237.6712 x 20 oz

Not one of the 8 cans on this page has a pest claim we can check, so that column would have been 8 empty circles and is replaced by what each can actually names. The test itself is set out above.

Pest block foam vs regular foam

Each pest can beside the same brand’s gap filler

Brand by brand, a pest block can is its maker’s gap filler with a pest claim added, and that claim is the only difference every pair has in common. Of the 5 pest cans here, 4 say the foam contains a pesticide and the other says it has none. Whether mice get through is not something the paperwork answers: none of the 5 pest block cans publishes a chew or exclusion test. In 2 of the 5 brands the gap filler prints something the pest can does not, and of the 3 brand pairs we could price in the same pack, the pest block can cost more per ounce in all 3.

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4 of 5 pest cans say the foam contains a pesticide
0 of 5 pest cans publish a chew or exclusion test
2 of 5 brands whose gap filler prints something the pest can does not
3 of 3 brand pairs priced in the same pack have the pest can as the dearer ounce

Kraken Bond

PestSafe Foam Sealant against Gaps & Cracks

Straw cans

Pest block can

Kraken Bond PestSafe Foam Sealant Amazon

Gap filler

Kraken Bond Gaps & Cracks Amazon

Row	Kraken Bond PestSafe Foam Sealant	Kraken Bond Gaps & Cracks
What it says about pests	Pesticide on the store; "Long-Lasting Pesticide Free" on the sheet; no EPA registration or establishment number	No pest claim
Data sheet	Dated data sheet5.14.2026	Dated data sheet4.9.2026 rev.2
Gap size or expansion	High expansion rate for wide gaps	High expansion
Working temperature and cure	Application 23 to 86 F; shelf life 12 months	Application 28 to 86 F; tack-free 7 plus or minus 3 min (ASTM C1620)
Fire wording	Not published	B3 to DIN 4102, the lowest German class; no US surface-burning figure

What the pest can adds on paper

A pest claim

What the gap filler prints that the pest can does not

Fire wording

Price per ounce, same pack

2 x 12 oz: $22.99 against $20.99

The gap filler is cheaper per ounce in the same pack.

Stanley

F993 Pest Block against F905 Gaps & Cracks

Straw cans

Pest block can

Stanley F993 Pest Block Amazon

Gap filler

Stanley F905 Gaps & Cracks Amazon

Row	Stanley F993 Pest Block	Stanley F905 Gaps & Cracks
What it says about pests	EPA-registered pesticide stated on the sheet; no registration number printed	No pest claim
Data sheet	Dated data sheet25.03.2025 rev.1	Dated data sheet26.03.2025 rev.1
Gap size or expansion	1 in to 3 in	Not published
Working temperature and cure	Not published	Tack-free 7 plus or minus 3 min, cutting time 40 min or less (ASTM C1620)Cured foam -103 to 239 F; application 41 to 86 F
Fire wording	DIN 4102-1 B3	DIN 4102-1 B3; UL 723 flame spread 10, smoke developed 20

What the pest can adds on paper

A pest claim
A gap size or expansion statement

What the gap filler prints that the pest can does not

A working temperature or cure time

Price per ounce, same pack

2 x 12 oz: $23.99 against $18.99

The gap filler is cheaper per ounce in the same pack.

Sprayman

Pest Blocker Foam against Gaps & Cracks Filler Foam

Straw cans

Pest block can

Sprayman Pest Blocker Foam Amazon

Gap filler

Sprayman Gaps & Cracks Filler Foam Amazon

Row	Sprayman Pest Blocker Foam	Sprayman Gaps & Cracks Filler Foam
What it says about pests	Pesticide claimed on the brand store and on the sheet; no EPA registration number, establishment number or active ingredient published on either	No pest claim
Data sheet	Data sheet with no date	Data sheet with no date
Working temperature and cure	Application 23 to 86 F ambient and surface; can at 41 to 86 F, 68 F optimal; cured foam -40 to 176 FTack-free 7 plus or minus 3 min (ASTM C1620), cutting time 45 min or less, full cure 24 hours	Application 23 to 86 F ambient and surface; can at 41 to 86 F, 68 F optimalTack-free 7 plus or minus 3 min (ASTM C1620), cutting time 40 min or less, full cure 24 hoursCured foam -40 to 176 F

Neither record states: Gap size or expansion, Fire wording

What the pest can adds on paper

A pest claim

Price per ounce, same pack

1 x 12 oz: $17.99 against $12.99
2 x 12 oz: $33.99 against $23.99

The gap filler is cheaper per ounce in the same pack.

Akfix

895 Mouse & Pest Barrier against 805 Gap Filler

Straw cans

Pest block can

Akfix 895 Mouse & Pest Barrier Amazon

Gap filler

Akfix 805 Gap Filler Amazon

Row	Akfix 895 Mouse & Pest Barrier	Akfix 805 Gap Filler
What it says about pests	Pesticide claimed; no registration number	No pest claim
Data sheet	No technical data sheet for this can	No technical data sheet for this can
Fire wording	DIN 4102-1 B3	Not published

Neither record states: Gap size or expansion, Working temperature and cure

What the pest can adds on paper

A pest claim
Fire wording

Price per ounce, same pack

No pack that both sell had a price we trust on the day we read the listings.

Great Stuff PRO

Pestblock against Gaps & Cracks

Gun cans

Pest block can

Great Stuff PRO Pestblock Amazon

Gap filler

Great Stuff PRO Gaps & Cracks Amazon

Row	Great Stuff PRO Pestblock	Great Stuff PRO Gaps & Cracks
What it says about pests	Pesticide-free; the barrier is the seal itself	No pest claim
Data sheet	No technical data sheet for this can	No technical data sheet for this can
Gap size or expansion Same figures on both records	Up to 3 in	Up to 3 in with the PRO dispensing gun
Working temperature and cure	Tack-free in 6 min; trimmable in one hour	Tack-free in 3 to 10 min; trimmable in one hour
Fire wording	"UL classified" with no category or file number. CCMC 13074-L is a Canadian Construction Materials Centre evaluation number, which carries no weight with a US code official	Three test methods named, ASTM E84, ASTM E814 modified and UL 1715; no index values or report numbers on the page"UL classified" with no category and no file number, which is the same gap we flag on other brands

What the pest can adds on paper

A pest claim

Price per ounce, same pack

No pack that both sell had a price we trust on the day we read the listings.

Kraken Bond Pro PestSafe and Sprayman Pro Pest BlockerBoth are gun cans, and neither brand sells a gun gap filler we track, so there is no plain can in the same format to set them against. Their records are on this page.

Whether a pest can is the right product for an opening at all, and how a durable rodent repair is built around foam, is the job of the pest block guide at Spray Foam Guides, our sister publication. Read it at Spray Foam Guides

The records

Each product, the claim in its own words, and what stands behind it

Every figure names its source. Where a maker publishes nothing, the record says so; a blank is a finding, not an oversight.

As an Amazon Associate I earn from qualifying purchases. That fee never sets the order or the score.

Straw cans, nothing else to buy

The tube is taped to the can. You press the trigger, you use it, and what is left in the can hardens within hours on most of these labels. This is the list for a single job.

Sprayman Pest Blocker Foam

The biggest pest seller, 1K+ bought; the sheet protects the foam in one sentence and blocks insects in the next, and names no ingredient.

Straw, 12 oz Also in gaps and cracks

See it on Amazon See it at Walmart Full record, documents and prices 3 of 4 confirmed

Brand data sheeta technical data sheet is published by the brand, without a date or revision on it
Claim checkableThe store claims a pesticide without naming the active ingredient, so there is nothing to look up. Without the ingredient we also cannot tell whether the claim sits inside the treated-article exemption or reaches past it, which is the point at which a registration number would be required.
Brand-channel sellerSold by Lotus Global Trade LLC, the storefront that carries the Kraken Bond and Sprayman lines and no other brand in our intake.
100+ ratings754 ratings on the anchor listing

The claim, in the seller's words

The brand store says the foam "contains an EPA-registered pesticide for blocking pests as rodent resistant insulation." The Amazon listing, under the name Pestblokc, makes no EPA statement.

sprayman.co product page and Amazon listing, read September 8, 2026

What the documents state

Pest claim	Pesticide claimed on the brand store and on the sheet; no EPA registration number, establishment number or active ingredient published on eitherBrand store and TDS
Working range	Application 23 to 86 F ambient and surface; can at 41 to 86 F, 68 F optimal; cured foam -40 to 176 FTDS, undated
Cure	Tack-free 7 plus or minus 3 min (ASTM C1620), cutting time 45 min or less, full cure 24 hoursTDS, undated
Names	Pest Blocker on the store; Pestblokc and Pest Block on AmazonStore vs listings
Use	"Best suited for outdoor use or in well-ventilated areas"Brand store
Gun version	The 24 oz Pro Pest Blocker gun foam has its own record on this pageStore and listings

Desk note

The biggest seller in the pest set: 674 ratings and "1K+ bought" on the 12-pack in the September 7 intake, and a "500+ bought in past month" badge on the single can on September 8. The claim that sells it, a pesticide inside the foam, is still the one a buyer cannot check. The data sheet does not help with that either: it names no active ingredient and no registration number. What it does add is the working end of the can and one sentence that matters more than any figure on it, because the sheet makes the exempt claim and the non-exempt claim one after the other.

EPA registration number and active ingredient published nowhere, including on the sheet; we have not seen the can label.
The sheet carries no date or revision.
Three ASINs for the 12-pack at one price split the feedback base.

Documents on file

PAGESprayman product page
TDSPest Blocker Foam technical data sheetOne sheet serves both the straw can and the gun can. Three pages, no date and no revision printed on it.

Sizes on Amazon, October 29, 2026 snapshot

Pack	Price	Ratings
1 x 12 oz1 duplicate listing at this size	$17.99	754400+ bought	Amazon
2 x 12 oz	$33.99	7541K+ bought	Amazon
12 x 12 oz	$104.99	75450+ bought	Amazon

Kraken Bond PestSafe Foam Sealant

Documented as a filler, with a bead yield on a dated sheet; the pest side names no active ingredient, and the can carries three names.

Straw, 12 oz Light yellow Also in gaps and cracks

See it on Amazon See it at Walmart Full record, documents and prices 3 of 4 confirmed

Brand data sheeta technical data sheet is published by the brand
Claim checkableThe filler side of this can is well documented. The pest side names no active ingredient, so the only part a buyer could check is missing.
Brand-channel sellerSold by Lotus Global Trade LLC, the storefront that carries the Kraken Bond and Sprayman lines and no other brand in our intake.
100+ ratings296 ratings on the anchor listing

The claim, in the seller's words

The brand store says "Formulated with an EPA-registered pesticide." The sheet says the opposite in a bullet, "Long-Lasting Pesticide Free," and its sentence on what the foam contains is missing the word that would name it: "containing an that protects the foam from attack by mice, birds, bats, and tree squirrels." Amazon sells it as Pestblokc, "with Mothball Odor."

Kraken Bond technical data sheet SF 411, dated 5.14.2026; brand store; Amazon listing

What the documents state

Pest claim	Pesticide on the store; "Long-Lasting Pesticide Free" on the sheet; no EPA registration or establishment numberTDS and store
Yield	1,300 linear ft of 1/4 in bead from 13.5 fl ozTDS 5.14.2026
Expansion	High expansion rate for wide gapsTDS 5.14.2026
Working range	Application 23 to 86 F; shelf life 12 monthsTDS 5.14.2026

Desk note

The best-documented pest can as a filler: a dated sheet with a bead yield and a stated expansion. As a pest product its two documents disagree: the store claims an EPA-registered pesticide and the sheet says "Long-Lasting Pesticide Free", and neither publishes a registration number. The three names, PestSafe on the store and Pestblokc or Pestblock on Amazon, are a matching hazard rather than a mark against the product; the "Mothball Odor" in the Amazon title is the one place the marketplace hints at what is inside.

The store says the foam has an EPA-registered pesticide; the sheet dated 5.14.2026 says "Long-Lasting Pesticide Free".
EPA registration number not published.
Same formula sold under three names across two channels.

Documents on file

TDSKrakenBond SF411 Pest Safe Foam Sealant TDS · 5.14.2026
PAGEKraken Bond product page

Sizes on Amazon, October 29, 2026 snapshot

Pack	Price	Ratings
1 x 12 oz	$12.99	29650+ bought	Amazon
2 x 12 oz	$22.99	296400+ bought	Amazon
12 x 12 oz	$94.99	29650+ bought	Amazon

Stanley F993 Pest Block

The only pest sheet with a gap range, 1 to 3 in, and a pesticide statement in the sheet itself; the ingredient is not named.

Straw, 12 oz Light yellow Also in gaps and cracks

See it on Amazon See it at Walmart Full record, documents and prices 3 of 4 confirmed

Brand data sheeta technical data sheet is published by the brand
Claim checkableThe sheet says the foam contains an EPA-registered pesticide that protects the foam from mice, which is treated-article language and needs no registration number of its own. The SDS lists 1,4-dichlorobenzene at 0.5 to 5 percent but does not identify it as the pesticide active ingredient, so the active ingredient remains unconfirmed.
Brand-channel sellerSold by Nucleus Incorporated, which carries only the Stanley line in our intake.
100+ ratings258 ratings on the anchor listing

The claim, in the seller's words

"Contains EPA-registered pesticide that protects foam from attack by mice and other pests." "Expands to fill, seal & insulate gaps from 1 in to 3 in."

Stanley technical data sheet F993, rev. 1, 25.03.2025

What the documents state

Pest claim	EPA-registered pesticide stated on the sheet; no registration number printedTDS rev. 1
SDS ingredient	1,4-dichlorobenzene at 0.5 to 5 percent; the SDS does not identify it as the pesticide active ingredientSDS, issue date 09.12.2024
Gap size	1 in to 3 inTDS rev. 1
Thermal	About R-4.1 per inch, with no test method, no thickness and no aging basis printed next to itTDS rev. 1
Fire class	DIN 4102-1 B3TDS rev. 1

Desk note

The only pest can whose sheet prints a gap range, 1 to 3 in, and the only one with a "200+ bought in past month" badge on September 8. The pesticide statement sits in the technical sheet rather than only on a store page. Its SDS also lists 1,4-dichlorobenzene at 0.5 to 5 percent, but neither document says that substance is the active ingredient behind the pest claim. A 20 oz gun version, F993P, has its own sheet and no Amazon listing we could find.

EPA registration number not printed.

Documents on file

TDSStanley F993 Foam Sealant Pest Block, TDS · 25.03.2025 rev.1
SDSStanley F993 Foam Sealant Pest Block, SDS

Sizes on Amazon, October 29, 2026 snapshot

Pack	Price	Ratings
1 x 12 oz	$12.99	258100+ bought	Amazon
2 x 12 oz	$23.99	258300+ bought	Amazon
12 x 12 oz	$92.99	258	Amazon

Akfix 895 Mouse & Pest Barrier

159 ratings and a "TDS" button that opens a 2022 safety data sheet; a pesticide is claimed with no ingredient named.

Straw, 12 oz Also in gaps and cracks

See it on Amazon Full record, documents and prices 2 of 4 confirmed

Brand data sheeta safety data sheet or a brand page is published, no technical data sheet found
Claim checkableA pesticide is claimed on the store. The EU-format SDS lists 1,4-dichlorobenzene at 0.5 to 5 percent but does not identify it as the pesticide active ingredient, so the claim is not traceable to an active ingredient.
Brand-channel sellerSold by Wios Global Trade LLC, which carries only the Akfix line in our intake.
100+ ratings170 ratings on the anchor listing

The claim, in the seller's words

"Contains an EPA-registered pesticide, effectively serving as a mouse hole blocker." "Conforms to fire class B3 (DIN 4102-1)." Sold on Amazon as 895 PestBlocker.

akfixstore.com product page, read September 8, 2026

What the documents state

Pest claim	Pesticide claimed; no registration numberBrand store
SDS ingredient	1,4-dichlorobenzene at 0.5 to 5 percent; the SDS does not identify it as the pesticide active ingredientSDS, 18.11.2022 version 00
Documents	The store’s "TDS" button opens a safety data sheet in EU REACH format, issued 18.11.2022, version 00Brand store
Fire class	DIN 4102-1 B3Brand store

Desk note

A well-reviewed can, 159 ratings and "100+ bought," whose one document is a safety data sheet filed under a technical data sheet button. The SDS lists 1,4-dichlorobenzene at 0.5 to 5 percent, but it does not identify that substance as the pesticide active ingredient or connect it to the store’s pest claim.

TDS button opens the SDS; no technical sheet found.
EPA registration number not published.

Documents on file

SDS895 Mouse & Pest Barrier PU Foam, safety data sheet (linked as TDS) · 18.11.2022, version 00The link is labeled TDS on the store and opens an SDS.
PAGEAkfix store product page

Sizes on Amazon, October 29, 2026 snapshot

Pack	Price	Ratings
1 x 12 oz1 duplicate listing at this size	$13.99	17050+ bought	Amazon
12 x 12 oz	$93.99	170	Amazon

BEEST FullStop Pest Block Foam

New, and sold only on the BEEST store as a steel wool and foam kit; no pesticide, no data sheet, no gap size and no reviews yet.

Straw, 12 oz Light yellow

Full record, documents and prices 0 of 4 confirmed

Brand data sheeta safety data sheet or a brand page is published, no technical data sheet found
Claim checkableThis can claims no pesticide, so its claim is the barrier itself, and the figure that would make it checkable is the size of gap the wool and foam are meant to close. Neither the store nor the can states one. No data sheet or safety sheet is published for this foam; the store’s FAQ refers to "the SDS" and links none.
Brand-channel sellerNo marketplace listing as of October 18, 2026. The kit is sold only on the BEEST store, so there is no marketplace seller to check.
100+ ratings0 ratings on the anchor listing, under the 100 we ask for

The claim, in the seller's words

The can says "Pest-blocking foam barrier" and "Lock in protection. Lock out pests.", with "Blocks insects" and "Blocks mice" under its icons. The store sells it as "a two-material system for sealing rodent entry points," steel wool packed first and foam over the top, and says "Seal rodent entry points permanently."

BEEST store product page and the can label in its photographs, read October 18, 2026

What the documents state

Pest claim	No pesticide named or claimed; the barrier is steel wool packed into the gap under the foamBrand store
Sold as	Kits only: 3 cans with 6 steel wool rolls, 4 with 6, or 6 with 9, each with scissors, a wooden push tool and glovesBrand store
Expansion	2 to 3 times; no gap size and no yield statedBrand store
Cure	Tack-free 5 min, trimmable 1 h, full cure 24 hBrand store
Working range	Ambient 41 to 86 F with the can at 68 to 77 F; cured -22 to 176 F; shelf life 12 monthsBrand store
Fire class	B3, with no standard named; B3 is the lowest class of DIN 4102-1Brand store

Desk note

New on the BEEST store in late September 2026, and sold as a method rather than a can: steel wool to pack the gap, foam to seal over it, then scissors, a push tool and gloves in the same box. That is the order this page recommends for rodent work, where foam on its own gets gnawed. Against it, everything a buyer could check is missing so far: no data sheet or safety sheet for this foam, no gap size, a B3 line with no standard named, no marketplace listing, and not one review on its own store when we read it. The page also disagrees with itself on the kit sizes.

No data sheet or safety sheet published for this foam; the store FAQ refers to "the SDS" and links none.
No gap size stated, only an expansion of 2 to 3 times.
Not on Amazon or Walmart as of October 18, 2026, and no reviews on the BEEST store yet.
The listing does not say what the wool is made of, plain or stainless steel.

Documents on file

PAGEBEEST store product pageThe size picker calls the 3-can kit a "whole-floor pass" and the 4-can kit "a few entry points"; the FAQ on the same page gives the 3-can kit to "a handful of gaps" and the 4-can kit to "a typical whole-floor pass."

Where it is sold

Not listed on Amazon or Walmart when we read it on October 18, 2026. BEEST sells it only on its own store, and the full record links there.

Gun cans, a foam gun is needed

These thread onto a foam gun, which is a separate purchase from about $15 to $56. In return you get a bead you can meter, and on most of these the can stays usable on the gun for weeks. This is the list for repeat work.

Best value 12 x 24 oz, gun can

Kraken Bond Pro PestSafe Foam

Gun version whose sheet says "special formula" while the store says pesticide; neither names an ingredient. Nine ratings.

Gun, 24 oz Light yellow Also in gaps and cracks

See it on Amazon Full record, documents and prices 2 of 4 confirmed

Brand data sheeta technical data sheet is published by the brand
Claim checkableThe sheet says "special formula" and the store says pesticide. Neither names an active ingredient, so neither claim can be followed anywhere.
Brand-channel sellerSold by Lotus Global Trade LLC, the storefront that carries the Kraken Bond and Sprayman lines and no other brand in our intake.
100+ ratings12 ratings on the anchor listing, under the 100 we ask for

The claim, in the seller's words

The sheet says "Contains a special formula for pest protection" and "Helps block the entry of pests." The brand store says "Reinforced with an EPA-registered pesticide."

Kraken Bond technical data sheet SF 412, rev. 3, dated 4.9.2026; brand store

What the documents state

Pest claim	The sheet says "special formula"; the store says pesticide; no registration numberTDS vs store
Cure	Skin time 7 plus or minus 3 min, cutting time 40 min or less (ASTM C1620)TDS rev. 3
Pack	Net 24 oz / 680 g; shelf life 12 monthsTDS rev. 3

Desk note

The gun version, documented and thinly reviewed: nine ratings on the bare can. Notice that the sheet and the store describe the pest ingredient differently, "special formula" against "EPA-registered pesticide." That difference is worth a question to the brand before a contractor specifies it for a pest job.

Sheet and store describe the active ingredient differently.
Nine ratings on the anchor listing.

Documents on file

TDSKrakenBond SF412 Pest Safe Foam TDS · 4.9.2026 rev.3
PAGEKraken Bond product page

Sizes on Amazon, October 29, 2026 snapshot

Pack	Price	Ratings
1 x 24 oz	$19.99	12	Amazon
2 x 24 oz	$29.99	12	Amazon
12 x 24 oz	$129.99	12	Amazon
1 x 24 ozwith gun	$49.99	12	Amazon
2 x 24 ozwith gun	$59.99	12	Amazon
12 x 24 ozwith gun	$169.99	12	Amazon

Sprayman Pro Pest Blocker Foam

Gun version, $19.99 bare or $44.95 with gun and cleaner on September 9; the store names six animals kept out, the sheet says the pesticide protects the foam.

Gun, 24 oz Also in gaps and cracks

Full record, documents and prices 2 of 4 confirmed

Brand data sheeta technical data sheet is published by the brand, without a date or revision on it
Claim checkableThe store says the pesticide is EPA-registered but names neither the registration number nor the active ingredient, so there is nothing a buyer can look up. Naming the ingredient is what this mark asks for.
Brand-channel sellerSold by Lotus Global Trade LLC, the storefront that carries the Kraken Bond and Sprayman lines and no other brand in our intake.
100+ ratings0 ratings on the anchor listing, under the 100 we ask for

The claim, in the seller's words

The brand store calls it "powered by an EPA-registered pesticide" and a "rodent sealant" that keeps "mice, rats, birds, bats, ants, and roaches" out, and lists it as "Professional Grade" for contractors.

sprayman.co product page, read September 9, 2026

What the documents state

Pest claim	Pesticide claimed as EPA-registered; no registration number and no active ingredient namedBrand store
Working range	The sheet gives two ranges: ambient and surface 23 to 86 F, can and applicator 41 to 86 F. The store gives one figure, 41 to 86 F, which is the can range rather than the ambient range. Cured foam -40 to 176 F on bothTDS, undated, against the brand store
Cure	Tack-free 7 plus or minus 3 min (ASTM C1620), cutting time 45 min or less, full cure 24 hours, then trimmable, sandable and paintableTDS, undated
Hazard	The page names diphenylmethane-4,4'-diisocyanate and asks for a ventilated area, gloves and eye protectionBrand store
Straw sibling	The 12 oz Pest Blocker straw can is the same line without the gun threadBrand store

Desk note

The gun version of the Pest Blocker, and the only pest can in this set sold as a bare can and as a set with the gun and cleaner in the same listing. On September 9 the store priced it at $19.99 for one can and $44.95 for the set, which is the clearest statement on this page of what the tool costs on top of the foam. Its pest claim goes further than the straw version: that one says the foam contains a pesticide, this one says it keeps six named animals out. Neither names the ingredient, and the further claim is the one that would need a registration number behind it.

EPA registration number and active ingredient published nowhere, including on the sheet; we have not seen the can label.
No Amazon listing matched: the 24 oz Sprayman listings we found carry a pond and landscape title.
The sheet carries no date or revision.
The store prints the can temperature range as the application range, which is 18 degrees narrower at the cold end than the sheet allows.

Documents on file

PAGESprayman Pro Pest Blocker product page
TDSPest Blocker Foam technical data sheetOne sheet serves both the straw can and the gun can. Three pages, no date and no revision printed on it.

Sizes on Amazon, October 29, 2026 snapshot

Pack	Price	Ratings

Great Stuff PRO Pestblock

Pesticide-free gray 3 in gun foam whose pest claim is the seal itself; the 3 in limit is on a web page, not in a data sheet.

Gun, 20 oz Gray Also in gaps and cracks

See it on Amazon See it at Walmart Full record, documents and prices 0 of 4 confirmed

Brand data sheeta safety data sheet or a brand page is published, no technical data sheet found
Claim checkableThis can claims no pesticide, so its claim is the seal itself and the test becomes the gap limit that seal works within. The limit is stated, up to 3 in, but it is stated on a brand web page. DuPont publishes no dated data sheet for this product, only an undated safety sheet, and this page does not accept a figure from a web page. Separately, the effectiveness wording goes further than a seal does; the desk note takes that up.
Brand-channel sellerSold by M&P Export Management Corporation, a reseller that lists Great Stuff, Enerfoam and DAP products. The brand itself is not the seller of record.
100+ ratings34 ratings on the anchor listing, under the 100 we ask for

The claim, in the seller's words

"Pest-free without the pesticides." "Controls critters, bugs, rats, and other pests from your home." "Won’t harm bees." "Expands to fill, seal, and insulate gaps up to 3 inches."

DuPont Great Stuff PRO Pestblock product page, read September 8, 2026

What the documents state

Pest claim	Pesticide-free; the barrier is the seal itselfBrand page
Gap size	Up to 3 inBrand page
Listings	"UL classified" with no category or file number. CCMC 13074-L is a Canadian Construction Materials Centre evaluation number, which carries no weight with a US code officialBrand page
Cure	Tack-free in 6 min; trimmable in one hourBrand page

Desk note

The one pest can in the intake that says plainly what it is: a gap filler with no pesticide, whose pest function is the physical seal. That makes its claim the easiest to understand and the only one on this page that does not depend on a number nobody publishes. "Controls rats" is a stronger sentence than "seals openings," and rodents gnaw cured foam, so read it as a seal and add hardware cloth where a rodent is the problem. On Amazon it arrives through a reseller, often as a kit with gun, cleaner and copper mesh.

No technical data sheet from DuPont.
"Controls ... rats" is an effectiveness statement; the mechanism is a seal, and whether that wording carries a regulatory consequence is not decided here.

Documents on file

SDSPRO Pestblock for PRO Dispensing Gun, SDS 000001157045SDS only.
PAGEGreat Stuff PRO Pestblock product page

Sizes on Amazon, October 29, 2026 snapshot

Pack	Price	Ratings
12 x 20 oz2 duplicate listings at this size	$237.67	22	Amazon
complete kit, 20 oz can with gun, cleaner and gloveswith gun	$114.95	3450+ bought	Amazon
12 x 20 oz with gunwith gun	$285.79	14	Amazon
12 x 20 oz with gun and cleanerwith gun1 duplicate listing at this size	$298.79	3	Amazon

Not listed, and why

Products we know of that are not on this page

Loctite Tite Foam Pest Block, a white foam whose sheet says it contains no pesticides and is "endorsed by Combat," was not in the intake. The same sheet notes that Loctite and Combat are both Henkel brands sold separately, so that line is a co-brand statement rather than an outside endorsement.
Great Stuff Pestblock (the consumer 12 oz gray can, pesticide-free) and GE Pest Block Insulating Foam are sold on Walmart and were not in the Amazon intake.
Stanley F993P, the 20 oz gun version of the F993, has its own data sheet and no Amazon listing we could find.

Questions and answers

Pest block foam questions, answered

Every answer comes from a maker’s data sheet, safety data sheet or manual, or from the records on this page, and says which.

Ask your own

Can I use pest block foam next to a baseboard heater, radiator or hot water pipe? Buyer question

None of the pest block documents we read mentions heaters, radiators or baseboards by name, so the figure to compare is each cured foam’s temperature range. Sprayman’s Pest Blocker sheet and both Kraken Bond PestSafe sheets give -40 to 176 F, Stanley’s F993 sheet gives -103 to 239 F, Great Stuff PRO Pestblock’s product page says not above 240 F, and BEEST’s store page for FullStop Pest Block gives -22 to 176 F; Akfix 895 has only a safety data sheet, with no cured-foam figure. BEEST’s page also says to keep the foam away from "open flame and heat sources during application and until fully cured," and three of the four pest data sheets list "water pipes" among their uses without separating hot from cold. The full can has its own limit: the Sprayman, Kraken Bond and Stanley sheets all say not to expose it to temperatures above 122 F.
Is it safe to spray pest block foam behind a stove or around a gas line? Buyer question

None of the pest block documents we read mentions stoves, ovens or gas lines, either as a use or as a place to avoid; what they print is a flammability warning for the can. Stanley’s F993 safety data sheet classes it "H222 Extremely flammable aerosol" and says "Keep away from heat, hot surfaces, sparks, open flames and other ignition sources," and Great Stuff PRO Pestblock’s safety data sheet adds that "Vapors are heavier than air and may travel a long distance and accumulate in low lying areas." The Sprayman, Kraken Bond and Stanley data sheets carry their own keep-away-from-ignition lines. For the cured foam, the only fire class on a pest data sheet is Stanley F993’s "Conforms to fire class B3 according to DIN 4102-1," and B3 is the lowest class of that standard.
Can I use pest block foam around electrical wires, outlets or conduit? Buyer question

All four pest block data sheets we read name electrical work as a use, and none goes further. Sprayman’s Pest Blocker sheet and Stanley’s F993 sheet say the foam can go "around pipes/electrical penetrations" and list "Insulating electrical outlets and water pipes," Kraken Bond’s SF 411 sheet names "electrical penetrations" and the same outlet line, and its SF 412 gun sheet lists "Around pipes and electrical outlets." None of them mentions conduit, wire insulation or foam inside a box, and no data sheet was found for Great Stuff PRO Pestblock, Akfix 895 or BEEST FullStop Pest Block. Questions about boxes and conduit under the electrical code go to the local code official.
Should I stuff steel wool or copper mesh into the hole before I foam it? Buyer question

None of the four pest block data sheets we read, from Sprayman, Kraken Bond and Stanley, mentions steel wool, copper mesh or any other filler, so the method is not part of what those makers document. The one product in the set built around it is BEEST FullStop Pest Block, which its store sells as "a two-material system for sealing rodent entry points," with steel wool packed into the gap first and foam over the top, in kits of "3 cans with 6 steel wool rolls, 4 with 6, or 6 with 9." Great Stuff PRO Pestblock, which claims no pesticide, is also sold on Amazon in reseller kits with a gun, cleaner and copper mesh. None of the pest documents we read prints a chew test for the foam, the wool or the mesh.
Does pest block foam keep out ants, roaches, wasps and other insects? Buyer question

The makers name a short list of insects, and none names wasps or hornets. Sprayman’s Pest Blocker sheet says the foam "also blocks ants, roaches, spiders and bees," Stanley’s F993 and Kraken Bond’s SF 411 sheets name the same four, and Kraken Bond’s SF 412 gun sheet adds mice, birds and bats and says the foam helps block them "by sealing gaps, cracks, and openings." Great Stuff PRO Pestblock’s page says it "Controls critters, bugs, rats, and other pests from your home" and "Won’t harm bees," and BEEST’s FullStop can says "Blocks insects." None of these documents names a test behind the insect claim.
What is the difference between pest block foam and regular expanding foam? Buyer question

On Stanley’s paperwork the pest can differs from the regular can by one listed ingredient and its pest wording. Stanley’s F993 Pest Block safety data sheet lists "1,4-dichlorobenzene" at "0.5-5" percent, while Stanley’s F905 Gaps & Cracks safety data sheet lists the same isocyanate and propellants without it; of the 26 safety data sheets we read, only F993 and Akfix 895 list that ingredient, and neither says it is the pesticide its maker claims. The two Stanley data sheets otherwise print the same light yellow color, the same "4.35 psi (30 kPa)" compression strength, the same "~4.1 per in." R-value and the same -103 to 239 F cured range, and only F905 carries a UL 723 result. Great Stuff PRO Pestblock claims no pesticide at all, "Pest-free without the pesticides," and its safety data sheet lists no 1,4-dichlorobenzene.
Which pest foams claim a pesticide inside the foam? From the records

Sprayman Pest Blocker, Kraken Bond PestSafe, Stanley F993 and Akfix 895 say, on the brand store or the data sheet, that the foam contains an EPA-registered pesticide, although Kraken Bond PestSafe’s own data sheet carries a bullet reading "Long-Lasting Pesticide Free"; Kraken Bond Pro PestSafe says "special formula" on its sheet and pesticide on its store. None names the active ingredient, which is the one thing a buyer could look up for a treated article, and none of their Amazon listings repeats the claim. Where a can goes further and says it keeps pests out of the building, a registration number of its own would be the thing to look for, and none publishes one.
Which pest foams claim no pesticide? From the records

Great Stuff PRO Pestblock says "pesticide-free" and that the barrier is the seal. Loctite Tite Foam Pest Block says the same, and its sheet adds that the Combat endorsement on the label comes from another Henkel brand sold separately. BEEST FullStop Pest Block, new on the BEEST store in September 2026, names no pesticide either: it is sold as a kit in which steel wool packed into the gap is the barrier and the foam seals over it. None of these claims needs a registration number, because none claims a pesticide.
Why does the same Kraken Bond can have three names? From the records

It is PestSafe on the brand store and Pestblokc or Pestblock on Amazon, and the EPA sentence that appears on the store does not appear on the marketplace listings. We record the difference and its dates; we do not know the reason, and the seller has not been asked. For a buyer the consequence is practical: a document filed under one name may not obviously belong to a can sold under another.
What is the difference between a pesticide and a device under US law? From the records

Under FIFRA a pesticide is a substance or mixture intended to prevent, destroy, repel or mitigate a pest, and it requires EPA registration. A device is an instrument or contrivance represented for that purpose that works by physical or mechanical means; devices are not registered, and are produced in an establishment carrying an EPA establishment number that identifies the factory rather than reviewing the product. An ordinary sealant does not become a device just because it fills a hole. There is a third category that most of these cans fall into, and it is the one that matters most: the treated article. Under 40 CFR 152.25(a), an article treated with a registered pesticide to protect the article itself is exempt from registration. A foam whose pesticide is there to stop insects eating the foam is a treated article, and it will never carry a registration number of its own, because it does not need one. What it should tell you is which registered active ingredient it contains, because that is the only part a buyer can look up. A can that goes further and says it will control pests in your house has stepped outside the exemption, and that claim does need a registration number behind it.

Ask your own question

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The guides this page leans on

Spray Foam Guides and Best Spray Foam share ownership. The first settles the building question; this page tracks exact products and what their makers publish. We have no commercial relationship with any brand on this page. As an Amazon Associate I earn from qualifying purchases. That fee never sets the order or the score. Ownership and conflicts.

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