I have killed three deer without it, (using a tradional archery setup) and all within 15 yards. As we know, the nose is a whitetail's first line of defense. Here is what I do to minimize scent exposure.
The human mouth is a significant source of odor. Your breath is the first thing the animal is probably going to smell. I use Vanishing Hunter to spray directly into my mouth before and during my time in the stand. I brush my teeth and mouth with baking soda before going into the field. Regular flossing is not only good for your overall health but it will also minimize bacterial growth between your teeth and thus your breath will have less odor to neutralize.
I wash my hunting clothes, underwear and socks with a no scent detergent. I use a no scent anti-perspirant deodorant. I usually hang my clothes outside or keep in a plastic bag to minimze household odors from permeating the fabric.
Your boots are important too as a potential source of odor. Odor Eaters sole inserts by Dr. Scholl's will help to minimize foot odor. I also spray Vanishing Hunter inside my boots and on my socks before putting them on. I use Maine Hunting boots, rubber bottoms, leather uppers. All rubber boots would be better. If I were going to spend the money for scent lock it would be on my boots before anything else.
Try to set up with prevailing winds in your favor if at all possible. Don't chew gum or eat snacks that smell out of place where you will be hunting.
That's what has worked for me. I have looked at scent lock clothing but it seems like it would be hot and uncomfortable. It also requires special care to keep it activated. Since I already do the things necessary to minimize odor, for me I don't think it offers any advantage.
