I know about disease vectors and the bother of the little critters nibbling into the sleeves of saltines crackers, leaving a carpet of tiny black pellets on the pantry shelf. But, really, they don’t eat much.
I lived for awhile in a cabin in a wood. On a winter evening, we would watched a tiny critter appear on one side of the living room, scurry around the top edge of the tongue-and-groove knotty pine sheathing to the pantry – where he (or she) – knew a tube of Ritz crackers waited. He took one, then retraced his path to his family.