Check the laws on beaver in you area. If you have a trapping season on them, find a reliable trapper, tell him you want them trapped out and to let you know when he is finished,after he has trapped them out, tear out the dam and the lodge. If you can't find a trapper, call your game commission and they will tell you how to get in touch with a A.D.C. trapper, tell him what you want. but make sure you tear out both the dam and the lodge. If you don't, other beaver will just move in. Shooting is not your answer. I have a beaver hide in my shed right now with two bullet holes in it.He had been shot three times, two in the hind parts and one in the tail. A farmer had tried for two years to shoot him in order to get him out of his pond. He called me, I set a trap one evening and picked up the beaver the next morning.