Little critters like this we do not kill - we trap them. A few years ago, a red squirrel took up residence in our garage, so we live-trapped him with peanut butter on a cracker to lure him in. Got him pretty quickly. Then we drove him about a mile away & pulled down a dirt road - it was dark out. We brought the trap out about 20' from the car & let him out. He ran under the car & just sat there. Finally, he boogied. We were joking on the way back home that he would probably beat us there!