I agree that scent control is important to success,but you have to remmember there is a differance between being "scent free" and and "scent control"
scent free= NO SCENT
scent control= taking steps to control scent(ie cover scents)
I have hunted with guys who take every step to be scent free only to then spray themselves and there equipment with cover scent and IMO you just destroyed the scent free steps you've taken. I have seen alot of guys over do it with cover scent.
And the point is to be "scent free" deer do not smell human scent and think hunter run away,what they smell is a foreign scent that they preconceive as danger,so they take steps to avoid it(ie. runaway) but the fact is any foreign scent will be preconceied as danger and avoided, whether if that foreign scent is human or an over abundance of any odor (ie.fresh earth,pine,acorn, ect.) anything out of the ordinary will be preconceived as danger and will be avoided.
IMO take the steps to be scent free not scent covered,because if theres NO scent theres NO danger.