1. A cat. Cats are cute and scare mice. If you have cats that weren’t fed mice as kittens, they won’t even eat the mice, though they might kill them. When the mice smell the cat, they leave.
2. Bobcats are either: 1) large wild cats that could attack children and not domesticatable; 2) very small Cub Scouts who tend to leave lots of crumbs, which will attract mice (unless there are cats around, infra)