I live in SE Pa, about 30 miles north of Phila. We are in a large development. I've been reading about weasels and was surprised to learn they are a predator in this part of PA. How can i protect my chickens? My coop is secure but the run is welded wire, 1"x 2". I read these little buggers can squeeze through tiny holes. Do i have to cover the entire run in hardware cloth?