Tree rats make for great target practice. My neighbor gives me $5 for every one I shoot. Seems they did right at $20,000 in damage to her home....insulation eaten off the wires, rafters and joists eaten, nests in the insulation, some even got into her ductwork(one died in a duct). Lots of colateral damage too.... fleas for one.....that was bad.

Squirrel = tree rat = rodent = pest/varmit