Pure N Clean™ Filter Cleaner - Just spray and rinse – this 100% biodegradable, multipurpose cleaner uses a unique blend of environmentally friendly agents to clean safely, clean fast! Contains no harsh chemicals (hydrochloric, oxalic or phosphoric acids). Safe for use on tile, glass, chrome, rubber, plastic and aluminum. Also cleans patio furniture, pool equipment, acrylic spas, boats, and more. Won't harm grass or plants.