
Ratings & Reviews for GREAT STUFF Pestblock 12-oz Smart dispenser Indoor Spray Foam Insulation Canister
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this pest-blocking foam for effectively sealing gaps and preventing insects and rodents, with many reporting dramatic reductions in ants, cockroaches, spiders, and mice. The reusable dispenser and precision nozzle are frequently highlighted as standout features, with users appreciating the ease of application and ability to trim and paint the cured foam. Most find it successfully fills cracks between one-eighth and one-quarter inch wide, creating airtight seals that eliminate drafts. A small number report dispenser clogging or inconsistent spray patterns, and a few note the foam appears cream-colored rather than gray. Despite minor drawbacks, most customers consider it highly effective and worth the investment.
Customer review summary generated by AI, including incentivized reviews.Great Stuff Pest Block
Would RecommendWorks just like normal expanding spray foam. Don't know if it's any different, but it's gray so it matches better with concrete block. Has blocked pests so far
Verified Purchaser
It works!
Would RecommendIt works and easy to use.
Verified Purchaser
Filled the cracks as needed.
Would RecommendVerified Purchaser
Not for an Old Novice
Would Not RecommendJust okay
Verified Purchaser
Yummy bug formula
Would RecommendCool foam. I didn't think bug's ate the other stuff until I saw this green can. Thought this was the organic version and then learned it was for bug resistant foam. So hopefully they will be fooled by the other non bug foam. If you are a bug reading this, please, consume and tell your friends.
Verified Purchaser
Borderline scam
Would Not RecommendI've been using great stuff for a long time, and it's not something I'd necessarily call a pleasure to use. This version is no different. Voids are formed, expansion is limited, so you typically have to do a 2nd pass once dry. These, however, are ridiculously short-lived. I bought two cans and I barely got 20 linear feet of 1 inch beads. That's over a dollar a foot. I could have just bought a small roll of fiberglass insulation and been better off.
Verified Pro
Hello treyus30, We are sorry to hear that our product did not meet your expectations and would like to hear more about your experience. If you would... Read More

Work great, loved the nozzle for apply foam insula
Would RecommendWork great, loved the nozzle for apply foam insula
Verified Purchaser
Don’t waste your money!
Would Not RecommendShook it up and it never mixed and struggled to get it out of the can. It’s white not grey!!
Verified Purchaser
It works well on small/medium size gaps
Would RecommendEasy to work with but doesn't expand like larger gap filler as I was expecting
Verified Purchaser
Prep the area well and application is easy
Would RecommendQuick drying and easy to use
Verified Purchaser
Use it all at once.
Would RecommendThe only downside is that it's really a one time use product. If you don't need a whole can to seal a crack it hardens and can't really be used at a later date
Verified Purchaser
Cures too fast in the nozzle, too thick
Would Not RecommendGreat foam, poor nozzle design. By the time an assistant cuts the nozzle and hands you the can in a tight space, the foam is already curing in the nozzle. GreatStuff needs to slow the foam cure and decrease its density so the product is functional.
Verified Purchaser
Hello Core365, Great Stuff™ cans with the Original Dispenser are considered one-time use and will seal shut if left to sit for more than 2 hours afte... Read More

Worked as advertised. Expands about 50%
Would RecommendVerified Purchaser
Hello Dennis, thank you for the review and we are glad that our products are working great for you.