Great Stuff 20 oz Big Gap Filler Insulating Foam Sealant (package may vary)

Cans I received seem old and the form materials hardly came out. They are completely useless. Asked for return or exchange, but Amazon doesn’t allow it for some reason… very disappointing purchase.

Very useful it did the job filled holes or spaces

I give it five stars because it works to fill gaps but if you add too much expands too wide and it opens the Gap more so be careful how much you use up with it

This stuff worked well for what I needed it. I had space between boards and roofing of a coop and chicken run that mainly I didn’t want wasp to be able to get in and I was able to pretty quickly and easily spray into the holes and fill them. It expands after spraying which is ok and can be good but when you don’t want to leave a gap you just fill it initially and deal with the excess after it expands. I just took a knife and made it look a little cleaner which really didn’t take long to do either. I don’t think I have to worry about anything getting in those gaps now whether wasp or any other animal.

This is good stuff, you get a lot from the can. Read the instructions before use. It addresses the top two things people give a bad rating for 1.) It's basically single use. It's expanding/sealing foam...of course it's going to seal it's own can. It even says this on the can. 2.)It isn't for filling huge voids. If it isn't staying in the void you want to fill, the hole is probably to big. It comes out a bit like shaving cream Imagine trying to fill a large void with that. I managed to fill some fairly big gaps. I would lay a bead, then another bead on top of that.

This works really well for filling good sized gaps and protecting against wind and drafts, rodents and pests from around openings into houses and sheds. It's easy to use if you follow instructions, and works really well. The only downside for me was that using a part of a can resulted in difficulty using any remainder at a later time as the spray nozzle was blocked by some of the dried spray foam.