That bites! Do you own the land? If so farmers out here just shoot them. Now I don't know if I could dothat but if it were my land and they are running on it and I spoke with the guy and he flat out said no,I would contact the DNR. They will tell you how to handle it. The way you handle it is up to you. But you need to do something especially with all that time money and work put in. Good luck!