I've had a problem with house mice for years. I've also got a cat and many many snakes, I've surprised mice in the basement eating out of the cats food dish. They had to climb over her litter box in order to get to the food. The cat used to catch mice but since she's currently 19 years old she doesn't have much interest anymore. I've got a live catch trap set up in my snake room and I catch wild mice in it from time to time.