Ive used the can for a few years now and im impressed with it,, yes there are times when the deer will ignore it but ive had more positive results with it than any other call.. Last year i got some video footage that looks like a commercial for the can,, I took my 91 year old grandfather out for a hunt since hes not able to get around much by himself,, we had a nice buck skirting the brush across the field from us at about 150 yards.. I dint know if he could shoot that far since he had missed on closer the evening before.. So i starting grunting at him,, hed only look the continue on,, then rattled andhe completely ingored it.. Then i hit the can a couple times, and he turned around and ran in so hard i lost him in the camera for a couple seconds,, he charged in at a dead run and put on the brakes at about 25 yards,, but it was to late grampas first deer in 20 years,, and on video,, ill cherish that forever