How often should I clean my Tub? To maintain the longevity of the high gloss finish we recommend a wipe over after every use with any non-abrasive cleaning liquid. It is also very important that you wipe around the door seal to remove any dirt or debris after every use. Damage to the door seal can invalidate the warranty. Your Air System will self-purge after 20 minutes of non-use, leaving the system clean and dry. Soft scrub or fiberglass cleaner can also be used for cleaning and purchased at stores such as Home Depot and Lowes.