Flat surface cleaners, or Whirl-A-ways, clean flat surfaces quickly, easily, and evenly. Use it, along with a power washer, to clean large flat surfaces such as long driveways, parking lots, rooftops, or pool decks. This flat surface cleaner prevents zebra striping and increases your cleaning time by up to sixty percent over a regular nozzle. Whirl-a-ways have water flow out the front away from the user and zero wall clearance cleaning.