TomcatRodent Block Expanding Foam Barrier, Fills Gaps to Keep Mice From Entering the Home, 12 oz.

Seems to work, used it in an RV to fill gaps along with some copper mesh dish scrubbers and half inch hardware cloth metal mesh, once those were in place with heavy duty stapler I used this to solidify it in and block all air also. So far so good.

As described

This product works like it says it does. It does have a smell so it’s good to have a fan or ventilation wherever you are using it. It’s a light gray color when it dries.

Used this to fill up holes in the vinal trim around my front door. Solved the yellow jacket problem

Can't give it negative stars. The straw only works for a while then plugs up. The screw dispenser part keeps coming unscrewed. The product is extremely drippy and doesn't stay in the gaps. Had to use a putty knife to try to shove it in but then most of it ends up on the putty knife. If you use this, use industrial strength gloves. I used normal work gloves and it went right through them. I'll be picking it off my skin for a few days. Acetone, paint thinner, and paint stripper didn't remove it from my skin or the putty knife. It's messy to use. I haven't had rodents yet but wanted to plug up possible entrances. Don't think it will work. Too soft and drippy.

The stream is to fine. Not sticky enough to stay in place long enough to set up. Can not use overhead. Needs to have an adjustable spray nozzle. Will see if it works.

What else can I say, I had mice then I sprayed the area that the mice were getting in through with the foam and have been mice free ever since.

I found this product to be excellent. The mice do not try to bore through the applied product however, it does not stop them from making new holes in a spot where the foam barrier had not been applied. I will say that when they do, I am able to continue using the product out of the same can, to plug the new holes that they make. The product does not dry up in the can as other products I have used do.