The only scent I use is special golden estrus from wildlife research center. I mainly use it at the beginning and the end of the rut and never go crazy with it. All I do is tie a padded or fluffy rag to a string, spray it three or four times then walk to my stand dragging it behind. Once at my stand I circle it @ 20 yards then drop it about ten yards infront of my stand. I think by using to much in my own experiences seems to spook bucks rather then draw them in. Without saying it works better at twilight times and other then that I like to be as neutral as possible.