I think the can is like anything else sometimes it works and sometimes it doesn' t. If they made a call or scent that worked every time it would be illegal. I had a huge 10 point come at me at a dead run one year but i was in a ground blind and he was directly behind me at 5 feet i was pinned. After just a few seconds he winded me and was a ghost. But like you were saying I' ve also had buck' s no batt an antler at the can.