It's a squirrel. I saw it! I knew it was big when spray paint cans started shake, rattle and rolling. It is tearing up the insulation around my heating ducts. Operation RID is underway! I called my closest male relative. My brother brought bird seed. We opened the garage door in the hopes that it is only trying to find it's way outside. We've left a Hansel and Gretal trail of birdseed to the outside.