I have a spare room to the side of my basement apartment. It is the only room that has not been renovated. It’s basically just a utility room with a heavy, door to the outside. Creep crawlies would get in that room from the outside & then the door separating my apartment from this utility room has a gap that’s the height of a quarter. I bought this to fill these gaps.I've been careful to cut it snug to reduce gaps as much as possible.

I got this. It works perfectly. Usually I can stand there & actually see the ants come in. One after the other. Since installing this... They’re not getting in! I’m surprised it sealed it off so well! It does it’s job when it comes to sealing.

I had to get another one for my front door I love it so much! This thing is amazing.