I've been dealing with mice in the coop and mouse turds in the feed. It's was getting so bad that I had to bring in the feed at night. Since the chickens don't eat at night anyway and I was having to throw out too much feed. Since I started doing that my killers chickens have taken care of at least two mice. The first one was still alive when I took it away, but soon died after and other one I had to forcefully take away from my largest Buff O, she was eating it. Now I wonder just how many they have killed and eaten. If they are or have eaten a mouse it should hurt them should it?