I was also skeptical after reading that wildlife biologists have said this is a myth and I have been "jugless" for two years trying to prove or disprove the theory. It has taken until last weekend for a deer to get close enough to the spot I had been urinating in for me to feel sure that there's no way it could not have smelled it. (We're talking 10 ft. precisely downwind) The deer seemed alert but not alarmed and it left this world a few seconds later. I am now a true believer. Leave the jug at home a substitute a small water bottle. Good for thirst and cleaning arrows after a hit.