You can hunt them, you can trap them, you can poison them, you can feed them little styrofoam balls, but you can't exterminate them. Folks have been trying to control them for a couple hundred years and their territory continues to expand, not contract. Use it as another great hunting opportunity if you want, but don't kid yourself by thinking you can control them. They area fact of life. If they get too thick, the mange will reduce their numbers. The only time that I've heard of coyote numbers being reduced is when the wolves move in, and nobody wants that. Be glad you just have coyotes.