I live in a part of Ohio that is loaded with deer. I ride 21 mile to work each morning before the sun comes up. I have, thank God, never hit a deer yet; however, have had a few close calls. I was wondering if anyone has ever tried a deer whistle and hoping to get some feedback as to whether or not they seem to work. I think I am going to get one regardless; still, your oppinions would be greatly appreciated.