Though it was cute when we found a couple of hay bales with empty holes in them. "Aw look there must of been a nest in here but its empty now." i ignorantly told the kids. Oh rats! Yes lots of them but we didnt notice them until a few years later. My chickens free range and the goats graze in the yard so poisons are out. What type of pest control will work in my situation where cant do poisons?