I have had success and failure with it. Kinda like rattling. Seems it is a timing thing. Had a 140-150" 8pt come to a scent drag once. My buddy later killed it. I was half way up my tree when he came in. Hard to shoot when hanging onto the ladder. This year I had a funky racked 3 or 4yr old bugger out when he smelled some of the Code Blue Estrous on a decoy. I had sprayed it down really well, but I suppose he could have smelled something else on it as well. Either way, he bugged out fifty yards away and just stood there staring.