We recommend cleaning your Nebia by Moen Quattro with a mild soap, rinsing thoroughly with warm water and drying with a clean, soft cloth. For hard water, you can use white vinegar. Never use cleaners containing abrasives (including abrasive sponges or steel wool), ammonia, bleach or sodium hypochlorite, organic solvents (e.g. alcohols) or other harsh chemicals (e.g. lime scale removers) to clean, as they may damage the finish.