I never had mice before I started working on a new design for a grain dryer. (They dig the corn that was left around. )
I had a five gallon bucket with a little corn in the bottom and it caught 3 of the little "darlings". (bastards actually!

) Totally by chance.
So I got an idea that I want to try: take a five gallon bucket and a piece of pvc tubing that will span the top of the bucket. Notch it so it can stay there. Slide another piece of pvc that is about 5 inches long and just big enough in diameter to slide over the first piece. Put a little peanut butter on the side of the second piece. It's my best guess that they will come out to get the peanut butter and spin into the bucket. And their buddy's should follow suit!!
If you don't want them to live too long, put about 4" of water in there.
I really do think it will work. I just need a little extra time to get a couple little pieces of pvc to make one. If somebody has the problem, and a little extra time, give it a try!
Great White Mouse Hunter,
Chaz