I use it but not all the time. Normaly i set it up just upwind of where i want to take a shot. Sometime i set it right by me. Heck sometime i hang i from my stand.
Last year though not thise year i had a drag behind me. Both deer that i shot at came to where it was stopped smelled it and head up the trail i came down. Odd this was they walked right by the scent bombs i head estrus in. I think they where alittle upwind of it.