Where I grew up there were a lot of stone walls(snake condos)but both my Mom and sister hated snakes. So if they saw one they would try to get me to kill it but most of the time I would just tell them I had scared it off. A few times I caught one but instead of killing them my Dad would just give it to a farmer down the road who had a couple of old barns with a lot of mice in them.

You can't make anything foolproof because fools are ingenious