We saw our black snake entering our chicken run last week. He's been living here for many years.....way before we had chickens. He usually stays in our lumber pile then goes in our building when he sheds. Anyway, we heard the chickens squawking and looked in.....snake on the way! I don't want to kill him (but will if he starts on the eggs!) What I heard was that putting lime around the fence would discourage snakes because the don't want to cross it. Any thoughts or advice about this or other ways to keep out snakes?