Deep cleans spa's pipes, plumbing, and equipment Removes organic, mineral, and chemical contaminants from the water Use this when opening or refilling your spa The Spa Marvel Cleanser is a granular product that effectively deep cleans spa's pipes, plumbing, and equipment by removing organic, mineral, and chemical contaminants from the water. Use this product when first opening your spa to eliminate residual left behind by the manufacturer, and during every refill to ensure that your spas surfaces are protected.