Sorry for the delayed reply Jslotter.... (see you're in WI...ditto...and good luck tomorrow!)
As for which sprays.....doesn't matter. It's sort of the Fabreeze effect...chemicals bond to the scents to kill them. Ok, but then where do they go, they get absorbed by the carbon. So the idea was let the clothing work as intended, don't spray things on it, don't wash it in soaps, etc. IE: Rinse it with water every once in a while and put it in the dryer.
And as others have agreed, the carbon eventually wears out, so where's the line between following the Scentlok guidelines vs having to wash it like any other piece of hunting clothing you wear??
I like the camo patterns, I like the comfort, and everyone likes to have brand names.....but I won't be going out and buying any unless it's on clearance. Maybe my thoughts are why they don't put me in the clothing dept of the store