I would agree that the scent lock stuff is not needed. Ever since we enclosed our blinds (which hides movement) we have seen more deer.
Once in Michigan (where gun hunting is not allowed from elevated stands, so everyone sits on the ground) I was sitting with my back up against a pine tree, a bunch of branches piled up around me, plus the boughs hanging down low covered me pretty good, and a bunch of does came out and 2 walked right up to where I was, 1 was so close I tried to smack it in the ass with a stick, that's when it jumped....same trip different ground blind had a non-legal length buck (less than 3" spike) walk right past me while sitting on the ground in an oak grove. He never noticed me at all. Another doe stood about 20 yds away and stomped her feet & snorted at me trying to get me to move, when I didn't move she just sauntered on by.