I've had the same hens for 2 years. And all of a sudden we had a raccoon break into our coop. Our coop is actually an old play house . We put metal fencing in all windows and doors that are re-enforced with screws and thick heavy wood. We put a light on the door and white little lights around the top. We put dead bolts on the door so. But is there anything else to protect my chickens . I would not like to loose them to these pests. ( we also have a trap where they broke in the first time) thank you for your help!