My mother used to always get field mice in the Fall so she would take some peanut butter, add a string into it and then add it to the mouse trap. The poor little critter will play with the string and get zapped in the process......but it worked like a charm for her. So far I've never seen a mouse in my house here in Iowa. I have a feeling my kitty would just play with it instead of doing her feline duty of taking it out.