I was given your larger trap to try when other traps wouldn't catch the mice in my kitchen. I thought, "yeah, yeah". I caught 7 mice in just 3 hours; even 2 at one time. Used peanut butter for bait and fed the mice to my neighbor's cat-A WIN,WIN!! I ordered 2 of the smaller ones (which came right away) thinking I was a mouse motel. I set the large one again to catch MIGHTYMOUSE and the smaller ones to catch minimouse and HER friends but 2 weeks-no more mouse motel. Work GREAT!!