I think if you hunt hard, hunt the wind and use good sense you will be as successful. I've heard people say they had deer downwind from them with their scent blockers on. I have also, and I don't use scent blocker suits. It depends on how the wind currents do after it leaves your stand. I just don't believe you can be truely scent free. When they do a commercial with trained bloodhounds not locating hidden people, I will be more of a believer.