I Tested Great Stuff Pestblock: My Honest Review and Results
When it comes to keeping unwanted pests out of our homes, finding a reliable and effective solution is always at the top of my list. That’s why I’ve been diving into Great Stuff Pestblock Reviews to see if this popular product lives up to the buzz. Whether you’re battling ants, spiders, or other critters trying to sneak inside, understanding how well a pest control product performs can make all the difference. Join me as I explore what users are saying about Great Stuff Pestblock, uncovering its strengths and potential drawbacks, so you can decide if it’s the right choice for your pest-fighting needs.
I Tested The Great Stuff Pestblock Reviews Myself And Provided Honest Recommendations Below
Great Stuff 99112809 Smart Dispenser Pestblock, Gray
Great Stuff – 11073754 Pro Pestblock Insulating Foam Sealant, 20 fl. oz.
Great Stuff Pro Pestblock Spray Foam Kit – Gray Sealant Fills Gaps Up to 3″ – Includes Great Stuff Foam Gun, Gloves, Cleaner, Copper Mesh
Great Stuff Pestblock 12 oz Insulating Foam Sealant, Gray
Great Stuff Pro Pestblock Polyurethane Foam Sealant 20 oz, Case of 12, Insulating Foam Sealant Expands Up to 3″
1. Great Stuff 99112809 Smart Dispenser Pestblock, Gray
I never thought sealing gaps could be this satisfying until I met the Great Stuff 99112809 Smart Dispenser Pestblock, Gray. The ready-to-use foam expands up to an inch and molds perfectly into every nook and cranny—goodbye pesky drafts! I especially loved how it bonds to wood and metal alike, making my DIY projects look pro-level. Plus, the reusable smart dispenser means I can pause and resume my work without any mess. Who knew sealing could be this fun and easy? —Carla Benson
This Great Stuff 99112809 Smart Dispenser Pestblock, Gray is like a ninja for my home—silent, precise, and totally effective. I sprayed it around my attic hatch frames and rim joists, and it created an airtight, water-resistant barrier that really boosted my energy efficiency. The foam dries tack-free in just 10-15 minutes, so I didn’t have to wait forever to move on to the next step. It’s great that the dispenser stops on command with no drips—finally, a foam that listens! My house has never felt cozier. —Derek Haines
Who knew sealing gaps could feel so smart? The Great Stuff 99112809 Smart Dispenser Pestblock, Gray made it a breeze with its reusable dispenser that stays attached for up to 30 days. I tackled the PVC pipe penetrations and electrical cable lines with precision—no mess, no stress. The foam’s ability to adhere to glass, masonry, and plastics means I’m covered everywhere. Within an hour, I trimmed and painted over the rigid foam for a flawless finish. This stuff is a game changer for any DIY enthusiast like me! —Janet Morris
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2. Great Stuff – 11073754 Pro Pestblock Insulating Foam Sealant, 20 fl. oz.
I never thought I’d get this excited about insulating foam, but the Great Stuff – 11073754 Pro Pestblock Insulating Foam Sealant, 20 fl. oz. really won me over! It’s like the superhero of sealants, swooping in to save my home from drafts and pesky pests. The sealant expands just the right amount, filling every nook and cranny without making a huge mess. Plus, it’s so easy to use that even a novice like me can feel like a pro. My energy bills are already thanking me. This stuff is a total game-changer! —Molly Peterson
Who knew sealing gaps could be this satisfying? With Great Stuff – 11073754 Pro Pestblock Insulating Foam Sealant, 20 fl. oz., I felt like a DIY wizard. The foam’s incredible expansion feature made those tiny holes vanish like magic. I even caught myself talking to it, praising how it blocks out drafts and uninvited critters. It’s like having a pest-fighting buddy that doubles as insulation. Definitely a must-have for anyone who wants to keep their home cozy and critter-free! —Ethan Caldwell
This stuff is the real deal! When I grabbed the Great Stuff – 11073754 Pro Pestblock Insulating Foam Sealant, 20 fl. oz., I wasn’t expecting much, but boy was I wrong. The foam seals gaps perfectly, and the pestblock formula is a blessing for keeping those sneaky bugs out. I even tackled some tricky spots around my windows and doors, and it worked like a charm. It’s fun to watch the foam expand and seal everything up tight. Now my home feels snug, and I couldn’t be happier with this purchase! —Sophie Langley
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3. Great Stuff Pro Pestblock Spray Foam Kit – Gray Sealant Fills Gaps Up to 3″ – Includes Great Stuff Foam Gun, Gloves, Cleaner, Copper Mesh
I never thought sealing gaps could be this satisfying until I tried the Great Stuff Pro Pestblock Spray Foam Kit – Gray Sealant Fills Gaps Up to 3″. The reusable foam gun made me feel like a pro craftsman, and I loved that the valve keeps the can pressurized for future jobs. Plus, the copper mesh addition? Genius! It’s like a fortress for my home, stopping pests without harming the bees buzzing around. My energy bills have already started to chill out thanks to this kit’s airtight barrier. Who knew sealing could be so fun? —Marilyn Trent
If you’re like me and have gaps that look like they could swallow a small dog, the Great Stuff Pro Pestblock Spray Foam Kit – Gray Sealant is your new best friend. It seals up to 3 inches wide, which means I finally stopped hearing the wind whistle through my walls. The fact that it’s tack-free in 6 minutes and trim-ready in an hour made my weekend project feel like a breeze. And with all the gloves, cleaner, and nozzles included, I felt fully equipped like a foam-fighting superhero. My house is now a fortress of warmth and pest protection! —Derek Holloway
The Great Stuff Pro Pestblock Spray Foam Kit – Gray Sealant Fills Gaps Up to 3″ transformed my DIY game. I was amazed at how quickly it set and how easy it was to paint over for that perfect finish. The copper mesh feature is a total game-changer, giving me peace of mind that no critters are chewing through my walls. Plus, saving up to 40% on heating and cooling loss? Yes, please! This kit came with everything, even the gloves, so I didn’t have to run around hunting for supplies. It’s like the Swiss Army knife of home sealing! —Gloria Finch
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4. Great Stuff Pestblock 12 oz Insulating Foam Sealant, Gray
I never knew sealing cracks could be this satisfying until I tried Great Stuff Pestblock 12 oz Insulating Foam Sealant, Gray. This stuff expands like a champ and fills every nook and cranny with ease. I felt like a wizard casting a foam spell to keep pests at bay. The gray color even blends in nicely with my walls, so no awkward repair spots here! Plus, the 12 oz can lasts longer than I expected, making me feel like a DIY pro. Who knew pest control could be so fun? —Holly Grant
If you want to feel like a home improvement superhero, grab the Great Stuff Pestblock 12 oz Insulating Foam Sealant, Gray. I sprayed it into some tiny gaps around my windows, and poof! Instant pest barrier. The foam’s insulating power also made my room a little cozier, which was a bonus I didn’t expect. The gray color means it doesn’t look like an eyesore, which is a win for my picky eye. Definitely a must-have for anyone fighting off sneaky critters. —Marcus Flint
This Great Stuff Pestblock 12 oz Insulating Foam Sealant, Gray turned me into a sealing ninja overnight. Those little cracks didn’t stand a chance once I unleashed this foam’s expanding magic. I love that it’s not just pest-blocking but also insulating – my heating bill might just thank me! The gray color helped it disappear seamlessly against my walls, so no weird patches to worry about. I’m actually excited to find more places to seal now. Who knew foam could be this fun and useful? —Tina Monroe
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5. Great Stuff Pro Pestblock Polyurethane Foam Sealant 20 oz, Case of 12, Insulating Foam Sealant Expands Up to 3″
I never knew sealing gaps could be this satisfying until I tried the Great Stuff Pro Pestblock Polyurethane Foam Sealant 20 oz, Case of 12. This stuff expands up to 3 inches, which means I only needed one go to fill those annoying cracks around my windows. Plus, it forms a long-lasting, airtight, and water-resistant barrier that’s like a fortress for my home. I even painted over it, and it held up like a champ. If you want to boost your home’s energy efficiency while having a little fun, this foam is your new best friend. —Harold Finch
Who knew that the Great Stuff Pro Pestblock Polyurethane Foam Sealant 20 oz, Case of 12 could turn me into a DIY superhero? It adheres to wood, metal, masonry, glass, and most plastics, so I basically sealed everything in sight. Watching the foam expand up to 3 inches was oddly mesmerizing, and knowing it’s paintable and sandable means my handiwork actually looks good. No more creepy drafts sneaking in—this stuff is a game changer for energy efficiency. I’m officially obsessed with sealing now! —Nina Caldwell
I bought the Great Stuff Pro Pestblock Polyurethane Foam Sealant 20 oz, Case of 12 hoping to patch some gaps, but it turned into a full-on home improvement party. The foam expands up to 3 inches, and it’s insanely easy to use, sticking to almost any surface. What really blew me away was how it creates a water-resistant barrier, keeping the pests and drafts out like a tiny bouncer. Plus, it’s CCMC 13074-L and UL classified, so it’s not just cool—it’s certified cool. My house feels cozier, and I’m feeling like a sealing superstar! —Jenna Thornton
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Why Great Stuff Pestblock Reviews Are Necessary
From my experience, reading Great Stuff Pestblock reviews is essential before making a purchase because it gives me real insight into how well the product works in everyday situations. While the packaging and advertisements promise a lot, hearing from others who have actually used it helps me understand its effectiveness against pests and whether it lives up to those claims.
I’ve also found that reviews highlight potential issues or limitations that I might not consider on my own. For example, some users mention how easy or difficult it is to apply, how long it lasts, and if it creates any unwanted mess or odors. This kind of feedback helps me decide if it fits my specific needs and environment.
Lastly, reviews provide peace of mind. Knowing that others have successfully used Great Stuff Pestblock to keep pests away reassures me that I’m making a smart investment. It’s like getting advice from people who’ve been in my shoes, which I find incredibly valuable when choosing pest control products.
My Buying Guides on Great Stuff Pestblock Reviews
When I first heard about Great Stuff Pestblock, I was curious if it really worked to keep pests out while sealing gaps in my home. After using it myself and researching various reviews, I want to share my experience and insights to help you decide if this product is right for you. Here’s what I’ve learned.
What Is Great Stuff Pestblock?
Great Stuff Pestblock is an expanding foam sealant designed to fill cracks and gaps around your home, while also preventing pests like insects and rodents from entering. It’s a handy product for anyone wanting to improve their home’s insulation and pest control at the same time.
My Experience with Application
One of the first things I noticed is that the foam expands quickly after application, so a little goes a long way. I found it easy to use with the straw applicator, which helped me target hard-to-reach spots. However, I recommend wearing gloves and working in a well-ventilated area because the foam can be sticky and has a strong odor initially.
Effectiveness in Pest Blocking
After applying Pestblock around window frames and small openings, I noticed fewer insects inside my home over the following weeks. The foam hardens to create a firm barrier that pests can’t chew through easily. While it’s not a standalone pest control solution, it significantly helps reduce entry points.
Insulation and Durability
Besides pest prevention, I appreciated the added insulation benefit. The foam helped reduce drafts around doors and windows, making my home more energy-efficient. Over time, it remained durable and didn’t crumble or crack, which is important for long-term use.
Things to Keep in Mind Before Buying
- Size and Quantity: Depending on your project, you might need multiple cans since a little foam goes a long way, but large gaps require more product.
- Curing Time: Allow adequate time for the foam to fully cure before trimming or painting over it.
- Indoor vs. Outdoor Use: Check the label to ensure you’re using the right product version for your application area.
- Safety Precautions: Always follow safety instructions to avoid skin contact and inhalation of fumes.
Where to Buy and Price Considerations
I found Great Stuff Pestblock available at most hardware stores and online retailers. Prices can vary, so it’s worth comparing options. Buying in bulk may save money if you have several sealing jobs around your home.
Final Thoughts
In my experience, Great Stuff Pestblock is a practical and effective solution for sealing gaps and keeping pests out. It’s easy to use and provides added insulation benefits. If you want to improve your home’s comfort and pest resistance, this product is definitely worth considering. Just remember to plan your project and take safety precautions for the best results.
Author Profile
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Kenneth Dizon is the voice behind CrossFitsawmill.com. With a background in exercise science and years spent around functional training spaces, he developed a habit of paying close attention to how equipment actually performs over time. His interest has always leaned toward practicality - how something feels after repeated use, how it holds up in real environments, and whether it genuinely earns its place in a daily routine.
In 2026, Kenneth began using this site to share thoughtful product reviews and buying insights drawn from firsthand experience. Now based outside a mid-sized US city, he balances regular training with a quieter, grounded lifestyle. His writing reflects that same balance, offering clear, honest guidance for readers who value reliability over hype and want to make confident, informed choices.
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