what to do with rabbits in the garden

well, rabbit are out of season for eating them. cat costs too much to feed. Box trap, yeah but I would still either have to kill them or let them loose when I caught them. I was a marksman back when I was in Vietnam so I still like the target practice idea the best so far. But I was wondering is there anything to put in or around the garden to keep them from going in it. I really don't like to kill animals. would rather they just keep on going.