I use that sport wash, with no u-v. Supposedly it works. I tested it with the blacklight we use for halloween decor,against a regular washed camo shirt that I wear just bummin around the house, didnt see much differance, but there was a slight change. As far as the scent free question, the wash is pretty darn good...I go directly from the washer to the backyard....let air dry and then into a scent free bag till it gets time to hit the stand. With the bisquit in the bag....lol...it really does smell like leaves and stuff when you open the bag.