i just started using some scent control things this season, mainly just the laundry detergent because of not having uv brightners. other than that, just the cover scent discs on my hat,and some spray, which i've questioned the effectiveness.
i've hunted for 18 years without any scent control, and never had a problem seeing or getting deer more or less than anyone else. i've taken a few big bucks, several small ones, and lots of does, all without scent control. also have had many deer walk right by or underneath me without being detected.
it seems that unless you are a scent control extremist and spend a fortune of time and $$, you're gonna have a 'scent leak' somewhere, rather than 'scent lok', making it all a wasted effort. i think it's over rated and a hugegimmick, but hey, someone's a millionare from it.
i'd rather invest my money in some good camo, warm and cool clothing, and good gear, and my time actually in the woods putting them to use. my best scent control plan is to dress appropriately and not get all sweated up heading in to the woods.