I bought one just this year, and have been using it here in MT. In two instances so far I've tipped the can for deer I could see. First, a spike buck, and he was really interested and seemed on the verge of coming over, but I don't want a spike so I hid from him. Second, I hit the can with a herd of does and fawns in sight below me. The lead doe did not approve! She took to stomping and snorting at me, although wind was clearly in my favor and she had no sight line to me.

I'd call that a split decision, but I have to use it more before I come to a firm conclusion.