About 4 years ago I had a pretty big boar bear scent track me right to my ladder stand and put his paws on the 2nd rung. I told him that one more step and he would get 30" of cold aluminum. He simply looked at me and steped down and fed his way away. I've had others run like they were shot out of a cannon. There have been several bears sighted this year in the area I hunt in PA.