I will be trying it for the first time this year. I won their monthly drawing back in Jan. for a full set of the outer clothing. I just bought the base layers so it will give me a true test if it works or not. Last wear I wore Scent-Lok with x-scent base layer and it worked very well, I had deer walking all around my stand on many occasions and never got winded. I also use Deer Dander as a cover/attractant. I will post results here on AT after our season starts in 2 weeks.