I was gonna suggest first finding where it is has made its nest. You could also use water as a trap believe it or not. Do you have any drippy faucets? If not maybe your pets' water dishes are what it is drinking from. If you could find a way to get their water dishes somewhere the mouse could not get to, but your pets could (although that could prove very difficult), then you could put a little water cup in the trap.
I dunno, just a suggestion [img]smile.gif[/img] Unfortunately I've had experience with mice, they only come out when you aren't looking or are asleep, and know a lot of tactics to make them seem nonchalant (cats like things that run, but may ignore something that isn't).
