Ok..another problem I went out there and removed my barrier for the nest boxes. And you see that little space between the wood pieces, as I pulled out the barrier, I nelieve it's mice poop that all piled up at the end. There is no food in their coop. Will this hurt my girls, and how do I get rid of them? I can't use poison or a trap around my girls. What else can I do. Like a said, I have all the cracks sealed, or so I thought. I don't even know where he came from. But, if he got in, a snake can too!