Jodi Marks, host of Best New Products on Today's Homeowner, with Great Stuff Pestblock Insulating Foam Sealant
You can find Great Stuff Pestblock Insulating Spray Foam Sealant at The Home Depot. (3 Echoes Content Studio)

Spray foam is an economical way to fill gaps around your home, but applying it can get messy. The folks at Great Stuff have solved this sticky situation with their new Pestblock Insulating Spray Foam Sealant, which features a Smart Dispenser straw. 

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Insulating a wall outlet with expandable foam insulation
Small straws on expandable foam cans make it harder to control the amount you apply. (BanksPhotos, Getty Images Signature)

The Problem With Expandable Foam Sealant

Small straws on most canned expandable foam sealants make them harder to control. Foam spurts out in bits, and drips quickly clog the straw.

Even if you use an extension tube, it can easily slide off and release foam everywhere except where it’s needed.

Great Stuff Pestblock Insulating Foam Sealant
Great Stuff’s Smart Dispenser allows for more precise application. (

More Precise Application

Great Stuff Pestblock Insulating Spray Foam Sealant’s Smart Dispenser straw creates less mess and gives you more control.

When you slowly let up on the trigger, pressure releases in the Smart Dispenser to give you a spurt-free spray and a consistent bead. 

This spray foam sealant creates a long-lasting, airtight and water-resistant barrier on gaps and cracks up to 1 inch.

Use it on:

  • PVC pipe penetration
  • Exterior of electrical cable lines
  • Water faucet penetration
  • Attic hatch frame
  • Rim joists
  • Sill plates

Great Stuff Pestblock Insulating Foam Sealant
This spray foam sealant can be reused for up to 30 days. (3 Echoes Content Studio)


Most foam sealants are a “one and done” application, so you need to use the whole can in one go.

Great Stuff Pestblock Insulating Spray Foam Sealant can be reused for up to 30 days with the straw left attached to the canister. Just clean the tip after your first use, then you can save the rest for another project!

It’s tack-free in five to 15 minutes and trimmable in one hour. And once it’s dry, you can sand, paint, and stain it to match the surroundings. 

Great Stuff Pestblock Insulating Spray Foam Sealant formula deters pests without using pesticides. (3 Echoes Content Studio)

Added Pest Protection

Great Stuff’s Pestblock formula is specifically designed to block out spiders, ants, cockroaches, mice and other pests from entering your home without pesticides. So no bees are harmed!

Listen to learn all about this Best New Product! 

Find Great Stuff Pestblock Insulating Spray Foam Sealant at The Home Depot.

Further Reading

Editorial Contributors
avatar for Danny Lipford

Danny Lipford


Danny Lipford is a home improvement expert and television personality who started his remodeling business, Lipford Construction, at the age of 21 in Mobile, Alabama. He gained national recognition as the host of the nationally syndicated television show, Today's Homeowner with Danny Lipford, which started as a small cable show in Mobile. Danny's expertise in home improvement has also led him to be a contributor to popular magazines and websites and the go-to source for advice on everything related to the home. He has made over 200 national television appearances and served as the home improvement expert for CBS's The Early Show and The Weather Channel for over a decade. Danny is also the founder of 3 Echoes Content Studio,, and Checking In With Chelsea, a décor and lifestyle blog.

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