Natural Chemistry's Clean & Perfect has a unique blend of powerful natural enzymes and citrus-base surfactants. It cleans even the toughest grease, dirt and grime with ease and won't harm any surface. Works great on anything that gets dirty including: pool tiles and vinyl liners, patio furniture and recreational equipment, mildew residues/waterline rings, leaf stains and more. Can be used in and around pools without negatively effecting chemistry. Non-toxic and biodegradable.