Bucket methods work pretty well on mice.

A neighbor set one up for me that consisted of a 5G bucket, some bailers twine and peanut butter.

Bucket was over half full of water.
Over the top was a tensioned length of bailers twine spanning the bucket. Peanut Butter was smeared on the twine over the center of the bucket. 2 lengths of twine were draped over the side of the bucket.

Mice can climb the twine on the side of the bucket quite easily, but they really suck at walking the Tight Rope. Splash!