trap-em or hang out with a accurate rifle and blow them into next week, also maybe if you carry a pistol or something with you wile you are walkin around and you see one BANG BANG BANG!
I would stick with trapping because you could make a profit on them and because they are really tough to kill and you almost never see-em, my grandpa shot one 3 times from short range with a 30-06 and it got away (it died afterwards though)