I have been using a scent wick of doe urine as a cover scent while bow hunting. Id just hang it off the side of my stand. During the last hour I had a younger buck come running in, nose to the ground, snorting, wheezing and acting a fool. He ran strait to the base of the tree I was in and went NUTS once he found the scent. It was entertaining to say the least.
I guess sometimes using scent works, sometimes it doesnt.