I had 2 in my cupboard. I figured it was time to do something when the cats would sit on the counter twitching their tails and I could hear the creatures scratching around. I caught 2; haven't heard anything else for about a month, so hopefully that is it...........for now.
I use chocolate chips for bait. Put one on your tongue till it gets soft enough to moosh up on the bait holder, push it up in there good. Then when it cools off, it will get hard again and when mousie has to really get in there an gnaw at it..........SNAP!!!! Much better than peanut butter or cheese.