I have a hen house attached to the back of the 10 cord wood shed. Plenty of room for critters of all kinds. Chickens + feed = mice. Mice = snakes. Last summer I was down at the shop working on a Saturday when I heard the distinct boom of a shotgun up at the house. Oh boy, running up the driveway and met my 13 year old boy flying down to meet me on his bike. My mind was racing but I saw the grin on his face. "Guess what?" he asked, and before I could guess, he gleefully told me that his mother had had enough of the black snake that lived in the woodshed going in and stealing eggs and she vaporized him with the shotgun. He was just beside himself that his cake baking, dinner making mother would do such a thing. Blood pressure and heart rate receding, I went back to wrenching. So, just get your wife some chickens and tell her the snake is eating the eggs and you will have a snake free woodshed. Personally, I leave the black snakes alone, they serve a purpose without any associated harm like the copperheads, I guess she didn't get the memo.