I live in Middle Georgia. I have found that the most persistent pest that I have to contend with in my chicken yard are possums. They seem to forage mostly at night, and one of their favorite stop-off's is my chicken house. I Have lights on. I have fortified my chicken house with extra wire. I even have an electric fence around the yard. Last night I caught one that managed to weasel his way through the front door. Will be fortifying that tonight. There seems to be no end to their ability to get into my chicken house and relieve me of at least one bird. My solution... Glock 30. I have terminated 3 in as many nights. I will be out hunting again. Are there any of you that have had success keeping these critters away from your chickens... short of rebuilding a new chicken house made of concrete and steel?