I have no idea such a thing existed until I stumbled upon a video on YT yesterday. Looks like only Optimum & Adams currently make it. The 3 YT videos I watched, both look be better than I would have suspected. But I can`t find anything in the way of reviews. And 98% of the info I see`s from the manufacturers product info page. Which surprise, surprise is telling me how awesome it is and I need to buy it. If I believe Optimum it`s a cheaper way to go over traditional compounds. Both say there will be little to no dusting. I got little to no dusting with the Scholl`s I had. I`m assuming the abrasives have to be less as the sprayer would get insta clogged other wise. And both mention no need to prime the pad, which was just a quick spray of some QD. I`m trying to wrap my head around the benefits here, it`s something new and different but why should I buy it? I`m assuming at least one person here has used one of the 2 and can give me some feedback.