I have not idea. I am sure it works but I have gone the way of not using scents. I try to be modestly scent free as there is only so much you can do. Heck my clothes probably smell like the wood stove at camp more than anything when I am up there and get dressed at camp. I spray down before I head into the woods. It seems to work. I have have decent success over the years hunting low deer density big woods. I tried all the scents and they didn't seem to yield much in the way of results for me so I kept my money in my pocket. Good luck let me know if you find anything and how it works for you. Sadly scents didn't work for me but it was worth trying.