BB - I have no idea here. When I was a teenager, I lived in the mountains away from it all (and I mean AWAY from it all... 22miles to the closest town) and we welcomed snakes because they did eat gophers. But I don't have moles/voles/gophers here. Every great great once in a while a prairie dog will wander into my cul-de-sac, but they usually get eaten by the hawks that live in my neighborhood.