I sometimes shoot them here on the farm at night. Game warden gave me a depreciation permit for hunting at night with a light. I usually use a 223. They cause me lots of problems, so I shoot everyone I can. I often dig a hole in their dam early in the morning so water can run all day. Just before sundown I set a light that throws the beam over the hole and the water just in front of the hole. They usually come to do repairs as soon as it gets dark.