Guy I hunt with really likes to use assorted scents. This year it was the buck bomb. He used it on opening day and saw a small 7 and and an even smaller 8 pointer. Three days into the season though, he took a nice 8 pointer. At this point however, he was long out of Buck Bomb and the 8 pointer walked in behind him and he got a shot at him from about 60 yards.
In my mind, he got the deer because he was quite and still, made a good shot and was in the right time at the right place.
To me, I'm just not a big believer in scents