Huge skeptic here. I used one on a few occasions. Had whitetail know something was up, but they just couldn't tell where or how far. 15yds a doe hit my scent line covered with the Ozonics. I was preparing for blast off, but she just looked far with head high. Away from me. I couldn't believe it. Bucks did the same thing two more times. The ozonics seems to dilute smell enough that it makes them think we are far away.