In my experience, Deer Dander is the real deal. I killed two bucks and saw many more using the Deer Dander. They came right to my tree with 10 yds. They were not just coming in my direction, they came into my area and then came straight to the tree where the bottle was sitting and opened. As far scent killer, it can only be a crutch if works right?? so if it's a crutch, it works.