Went to a SHOOT show today and a guy pitched the Scent Machine at me. It' s an aerosol scent dispenser that you hang on a tree upwind of where the deer are (bedding area, etc) and it sprays synthetic scent into the air every 3 minutes or so. Anyone have any experience with this product. I would like to get some feedback before I shell out some cash for it. Especially since I haven' t had very good luck using scents anyway.