I would set up some live trap boxes, this way chicken will be safe and you can trap and release or box up to kill. Yuck, I found mice babies in my arame, no mom just 2 mice babies, me thinks the garage has mice. Looking to trap my self.I thought chickens would eat mice, too. But I have loads of them living under the coop and coming out to eat in the evening and mornings and no one is eating them. When I cleaned out the coop, I even found two that had gotten into the coop and settled in behind an egg box. I have alot of chickens, so if they were going to eat them, they should be doing it. I guess I feed them too well. Apparently, I need another option to keep the mice out of the run and coop!