We have our chicken run surrounded with Electric fencing 1 line at the bottom, 1 about 2 feet higher and so on up to 4 wires. We have our hardware cloth down to the bottom of the run and then bent and laid flat up to 2 feet out from the bottom of the run. So far, we have deterred, Racoons, Coyotes, possums, rats, mice snakes and Black Bear. Also, we have a coop that is built well with an automatic door that closes at night and opens in the mornings. The coop is wrapped in the electric wire as well. I know this is a lot, but we live in the Smokey Mountains in a wooded area, and we can't take the chance. I believe if we didn't do this, we would never be able to keep chickens. We also take our chicken food out of the run at night and put it in a secure building.