HOW TO USE WITH SOUNDPROOF FOAM!
These definitely DO work with soundproof foam. You just have to install it correctly.
By Trace on May 28, 2020
1.) Peel one side of the command strip, place it on one of the top corners of the foam piece. Do this again for the opposite bottom corner. (Just like in the picture.)
2.) Firmly press both strips against the foam by pinching your thumb and fingers together for 10 seconds. You will not damage or alter the foam in any way by doing this.
3.) Peel the other side of the command strips. Place it on the wall in your desired spot and press HARD against the wall for at least 10 seconds. Make sure you're applying that pressure right on top of the command strips. Again, this won't hurt the foam or your wall.
Works great! I've had zero issues with the soundproofing falling or not sticking properly. Just make sure to follow the steps and you'll get great results. Hope this helps!