Water jetters spray pressurized water into drain lines to flush out grease, sludge, sand, or other soft blockages and to break down ice plugs in frozen lines. They clear the full inside diameter of pipe, not just a portion of the blockage. Their hose feeds from a reel that's supported by the water jetter frame, keeping both hands free to guide the hose into the pipe. They provide a final scouring of the pipe walls as the hose retracts onto the reel.