A scent can be used exactly right, and still not draw deer in. It depends entirely on everything coming together-a deer coming downwind of your scent, and, being in the frame of mind to want to check it out.
Im was referring to Cover scents primarily..
As of the last 20 or so seasons, applied right, they are 100% effective"for me". Apply them wrong, ie your cloths, to much, to little, and your ruined..
Personally, I have enough does, roughly 15 this year roaming daily to be bait. Bait scents are to risky, cheap, and random to even use.
And as Jph said it is all about eliminating your actualy scent..We old timers up in acorn country always say, those that have to use doe pee, mock scrapes and doctor in odd ways, need to learn how to hunt:)