Here's my trick to catching mice. It's a little involved, but works really well. Take a piece of elbow macaroni and feed a piece of dental floss through it. Using a toothpick, fill the inside of the macaroni with peanut butter. Tie the macaroni to the bale of a standard wooden mouse trap with the dental floss. Set the trap. The mouse will smell the peanut butter and try to pull the macaroni off the trap, which doesn't end well for the mouse. If you've ever had problems with mice licking the trap clean and not snapping it, give this a try.
