hope I'm not giving away my secret here...
but I'm sold on washing my clothes in scent free wash/no UV brightners etc...
and using scent killer spray before I go out...
those 2 I'll take over "scent lok" any day!
as for cover scents and attractants, doe pee, etc... I'm not into that stuff, more hassle than production... and I've never seen any success from it either.
I'm probably in a high doe area.... and believe in part that doe estrus works less well when bucks have many does to choose from vs. none/very little, if you were in a high buck to doe ratio area I'm sure doe estrus would work better, as would calls etc....
I always have a grunt tube...