Keep Rodents Out! Pros and Cons of Steel Wool vs. Copper Mesh vs. Great Stuff Pest Block 

Interesting idea Superjoseco! I haven't heard of that one before, but makes sense. Thanks for sharing!

Reading this after I just tried to blanket a huge opening in my cupboards with some copper mesh, PL glue and heavy duty staples lol

@@jays6553 let me know how it works out, with using the copper mesh. I had a rat bitten hole in my wall coming from the garage that I covered with copper mesh strips, (but the hole was behind a piece of furniture). & I didn’t find out until later, that eat right through that copper mesh. - Do you have a hole in your cupboard coming from the bottom? or coming from behind the wall?

⁠@@MikeCee7 Unfortunately we have more than just holes. We have large cut outs from when we made the mistake of letting the insurance handle repairs after our kitchen had a major leak years ago. So I’m not able to just stuff mesh into a little hole, I have a large area to cover and I also have to get around the drain pipe etc. I’ll let you know how it goes

@@veejs05 I would use hardware cloth. That’s much stronger than copper mesh. (Copper mesh is only better to fold & “stuff” inside brick wall weep holes)

That's what I was thinking

Combine copper and steel? Yeah okay.

Hi Terry- I haven’t used it near any hot surfaces as I’m not sure it’s rated for that. I’d use steel wool or copper mesh or even sheet metal to cover thst

What did you end up doing? I am contemplating the same thing.

@@BucketsMan24 I didn't use spray foam as I didn't want chance with the potential fume. I knew the building manager wouldnt be ok with it. I end up using more and compacted steel wool instead.

Following. I have the same issue.

Caulk can work except that rodents can eat through that if they really want to get through. The pest block foam spray has a chemical that tastes bad to rodents that usually stops them from eating through it.

Absolutely. That is a great approach. It’s one more layer of defense besides just the foam. It also helps act as something for the foam to grab on when you are spraying

And if it's outside, it will help protect the steel wool from rusting quickly.

Good point!