I had a 2 1/2 year old in the field about 80 yards away last year, i'd seen some young bucks chasing and grunting after a doe on the other side of my stand, so i hit the can, the deer looked up and ignored it, i tried it again and never got any more responses from him. It sounds real enough, but it's definitely not fool proof. Can't say that i've had any outstanding success with it. But I know of those who do, so it'd be worth having along just in case.