As stated put peanut butter on traps and set them out. Also get peppermint scented candles or air fresheners and place them out. Mice hate peppermint. Since I have been growing my own and placing it around my house where mice might get in I haven't had a problem.
There are sticky pads you can buy at the store. You put them in corners you think they come from and when they walk on it, they are stuck onto the pad and won't be able to move. It's VERY sticky. Look in Walmart or any store near you SORRY IM LATE