I think you have to get one of these. Sure you have to have him roto rooter-ed for bones every 6 years or so but its worth it not to have rabbits,moles or skunks, woodchucks, raccoons,opossum, rats, mice, he is a bit bored with squirrels[ tree rats] but they stay away from our house.
I have seen him kill a coyote the dumb ass wandered into the pasture and those are Suede's cows dammit!