Because you never know who your neighbors are. We seem to have a regular visitor from our trail camera. Where the young are you know mama's not too far behind. We don't keep food in the run (unless you count the girls). the run is then chainlink all around and on top, on the inside of the run, it is all chicken wire to deter the raccoons from sticking an arm in, and the coop is very secure. I think we will also have a hot wire installed. So far we haven't had a break-in. If he was bigger - he could be a carpet.