Used to have an occasional problem with the odd field mouse getting inside from time to time, and sometimes even gnawing into the breakfast cereal. But for the past several months we've had a little orange ginger cat, which my daughters named Rusty. Very civilized little thing; quiet voice, doesn't knock things off shelves or break stuff, doesn't climb bookcases, didn't even do anything to the Christmas tree when it was up. But I haven't seen a single mouse or evidence thereof in all the time she's lived here. (Yeah, *her* name is "Rusty". Daughters. Go figure.) I happen to know she's marked the perimeter when she was outside. She's got a plan.