When we were kids we'd bury a short bucket in the dirt or snow so that the top was flush with the surface. Hand full of corn in the bottom. We caught mice, shrews, and voles, but the weasles and chipmunks could hop out. After a weasel found the bucket, we'd never have any mice by the time we got to it, he'd clean them out every night.
Perfect, you know the bucket dimensions by chance?