Cleans all flat surfaces including patiorsquos paths and walls six times faster than a conventional nozzle taking the effort out of cleaningthis unique accessory designed to fit most of the current nilfisk alto consumer pressure washer range allows large horizontal or flat surfaces to be cleaned quickly and efficiently with little or no overspray of water the patio washer works by using high pressure water from the pressure washer to drive a rotating arm which cleans a wide area in one p