And just when I think this is a problem we hear gnawing inside the plaster wall up toward son's old bedroom ceiling before 6 a.m. this morning. I went to the cellar for d-con and went to the attic to place it. I doubt it even gets in the attic, but just incase. I think it's a chipmunk, but it sounded like a groundhog at that hour! I have too many undomesticated critters here!