I don't know whether it all works, but I use some of the stuff that makes sense to me in my locale. For example, I hunt mostly in the swamp in warm weather. After walking a half mile or more in 80 degree weather, in knee high water with 50 pounds of gear, I am pretty much drenched in my own sweat by the time I get to my tree. Then I have to climb up it. So, I use the scent free soaps and sprays and body deoderant and Xscent or Contain clothing to curb bacterial growth on my skin. I agree that hunting the wind is the most effective tactic, but the wind swirls a lot, and it can't hurt not to smell like a heap of dirty laundry.

There are also a lot of bugs, so I use a BugTamer Plus suit with the leaves sewn on for extra camo and to break up my outline. I don't know for sure if it is the camo or the leaves at all, but I have had many deer look right up at me for a few seconds and then just go about their business. I agree that keeping still is the most effective tactic, but I figure that, since I have to use a bug suit anyway, I might as well maximize my concealment. I also wash my hunting clothes in a non UV brightening soap, just because it makes sense to me that if deer see better in the blue light spectrum, I don't want to highlight myself.