You have to think of this stuff as a sort of scent absorbing "sponge". It can only absorb so much scent before it becomes saturated. Once it is saturated it actually becomes worse than wearing no type of scent control. The manufacturer recamends recharging the clothing every 30 to 40 hours of use, and twice as often for the head cover. Also the clothing needs to be kept in a sealed container to keep it from absorbing unwanted oders while not in use. Another thing the manufacturer recamends is that you DONT use cover scents. Cover scents will actually saturate the carbon rendering the clothing useless.
As much effort as I put into my scent control I still don't think I can eliminate my oder completely. Theres always something I have done that could possibly be why the deer picked me out. ie...I always kiss my wife before I head out, I like to bring snacks with me to munch on, quite often I walk partway down our road before cutting across the field to get to my stand. Of the times I have been busted while wearing this product I can't say for certain that it wasn't something else I did that caused my scentloks to fail.
Right now we have snow on the ground and the deer that
I have spooked have been spooking on me when they walk across the trail I made on my way out. It could be that scent doesn't even enter into it. Maybe they just see my tracks and can tell the difference between human tracks and animal tracks? I don't know. All I do know is I am spooking less deer now than I was before I used this product, and I hunt alot!

The spirit of the woods is an old good friend