they were recommend by the camp host. the campground wouldn't allow me to wash it because of a water shortage. xtreme wash was double the cost of mobile washes in Las Vegas ($4.25 a foot) but I decided to give them a try anyway. they knocked on the door saying they were done but after looking it over it was far from done, the wheels hadn't been washed, streaks down the sides. they used some sort of harsh cleaner on the coach that left white streaks on what we're polished aluminum rims, they also used a brush that left swirls in the paint then wanted to charge another $160 to polish them out. would NOT recommend them, save your money.