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🚫🐜 Seal smart, live pest-free—because your home deserves the best defense!
Great Stuff 99112809 Smart Dispenser Pestblock is a gray, ready-to-use expanding foam sealant that fills gaps up to 1 inch to create airtight, water-resistant seals. Featuring a reusable dispenser for up to 30 days of no-drip, precise application, it bonds to multiple surfaces including wood, metal, and masonry. Fast-drying and paintable, it’s UL classified and designed to block pests while improving home energy efficiency.











| ASIN | B07GL5H78K |
| Best Sellers Rank | #1,064 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Wall Surface Repair Products |
| Brand | Great Stuff |
| Brand Name | Great Stuff |
| Color | Gray |
| Compatible Material | Wood, Metal, Masonry, Glass, Plastic |
| Customer Reviews | 4.3 out of 5 stars 4,907 Reviews |
| Global Trade Identification Number | 00041343012084 |
| Included Components | SMART DISPENSER straw |
| Item Dimensions | 3 x 3 x 8 inches |
| Item Form | Spray |
| Item Type Name | Pestblock |
| Item Weight | 12 ounces |
| Item dimensions L x W x H | 3 x 3 x 8 inches |
| Manufacturer | Dow |
| Material | Plastic |
| Material Type | Plastic |
| Model | 99112809 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 99112809 |
| Style | Pestblock |
| Style Name | Pestblock |
| UPC | 041343012084 |
| Unit Count | 1 Count |
| Warranty Description | Warranty |
| Water Resistance Level | Water Resistant |
E**E
Great Product for Sealing Gaps and Keeping Unwanted Pests Out
I purchased this Great Stuff Pestblock foam after inspecting my basement and finding a couple of small openings where rodents or other unwanted pests could potentially get inside. Sealing these areas was important to me, and this product worked exactly as I expected. I have used Great Stuff products for many years, and I have always been impressed with their quality and reliability. The Smart Dispenser makes applying the foam much easier because you have better control over where the product goes, and it helps reduce waste compared to some other foam sealants I have used in the past. The foam expands well to fill gaps and creates a solid barrier once it cures. It adheres well to different surfaces and is perfect for sealing around pipes, openings, cracks, and other areas where pests can enter your home. The only thing to remember is that this foam expands, so you want to apply it carefully and avoid overfilling an area. A little goes a long way. Overall, this is a high-quality product that does exactly what it is designed to do. I have trusted Great Stuff products for years and would highly recommend this brand to anyone looking to seal gaps, improve insulation, and help keep unwanted pests out of their home.
T**S
Worked Perfectly for Sealing Out Rodents
This product does exactly what it’s meant to do. I used it to seal an old hole on the side of my garage that previously had plastic stuffed into it to keep rodents out. I added a bit of copper mesh, and the foam flowed right through and expanded all around it, sealing everything up nicely. As a first-time user, it did get a little messy, but that was more user error than the product itself. It’s really a single-use item, but that seems standard for this type of product. Totally worth the money—especially for the peace of mind and not having to keep putting the job off. I would definitely recommend it. Pros: - Works exactly as intended - Expands well and seals thoroughly - Great for pest and rodent prevention - Easy to apply once you get the hang of it - Worth the cost for peace of mind Cons: - Can be messy for first-time users (likely avoidable with experience)
2**D
Meh it’s OK
This is fairly easy to use and works well. It is an ugly yellow color foam. The foam expands slowly so be prepared to scrape off the excess or touch it up over 15-20 minutes. Once it dries you can’t make adjustments so be vigilant and check on it.
T**E
So far so good!!
We have critters every year when it gets cold. Used this to seal up any holes to prevent them from getting in. Year two now and no issues
A**R
Usage
Easy to use and works great
J**O
Indifferent on this product.
The foam does expand and covers what you need when applying to surfaces. Adheres to the surfaces The problem is that the sprayer doesn't always work well. Foam starts grey but yellows after it dries.
H**.
Get it!
Get this if you have an RV or any bugs in your house. I live in Texas and this has been a lifesaver at prohibiting bugs from getting into my house and RV. great product great price.
H**Y
Great Stuff? More like Great Mess!
I bought this to deal with a mouse problem and expected it to dispense like Great Stuff foam. Instead, it started hissing and spraying out from the bottom of the applicator, making a huge mess all over my kitchen sink and my hands. Honestly, I saw other reviews mention this and figured I’d be careful. I made sure the applicator was tightened down as much as possible. It wasn’t loose and didn’t move at all, but it still leaked. I tried to use it anyway, but it was very hard to control. Even when I got it into the mouse entry point, it didn’t apply the way it should. I expected a neat, controlled bead like the pictures show. What I got was uneven, sloppy foam that spread everywhere. Once you start using it, you basically have to rush because you only get one shot. The foam clogs the applicator, so there’s no "saving it for later". Total mess and a complete waste of money. I was stuck with a big cleanup, a huge bag of steel wool I probably won’t use, and no real confidence that this will even solve the mouse problem. It just made things worse. Luckily, this is a rental apartment and not my own house, so someone else will ultimately have to deal with the aftermath. Still, I would recommend choosing a different product. Don’t trust the “no drip” claims or the marketing.
Trustpilot
2 weeks ago
3 days ago