This year we had an invasion of dormice (loirs) in our attic. They make a mess, and can do rather a lot of damage to fabrics if not controlled. I caught 13 of them with a trap like this one., called a nasse. Peanuts seemed to be an effective lure. The dormouse falls into the trap via the little trapdoor. I drowned a few, but my S.O. found this un-evolved (they are awfully cute) and I liberated the rest far from our house....we're now, I think, dormouse-free.