I got a 4 foot long bull snake roaming around my farm, and i'm afraid it's going to get into my chickens. My brother saw it today for the first time. I'm sure i know where its living. There is several holes inside my shed, that has a dirt floor . They tunnel under the concrete floor. I have filled the holes but the next morning there open again. If i can find it out, i'll kill it, but if i cant find it how do i get it to leave. I also have cows and goats around, so there is lots of hay and feed for mice. I cant keep all the mice gone with d-con. So open to any ideas