In case you're not sure whether it's worth the trouble... I went to the coop this AM and found that something had persistently tried to dig in late last night or early this morning. Literally, a dig attempt every few inches around the perimeter of the run down to the skirting fence. Where the skirting fence ends at the corner of the brooding coop, there was a hole about 18" across and 6" deep. Nowhere to get in over there but that didn't stop the attempt.