This tough, handy cleaning tool is packed full of effective, biodegradable, nontoxic Simple Green . The Simple Green scrubbing pad is heavy-duty for tough cleaning jobs, yet nonabrasive for lighter cleaning. Each scrubbing pad contains micro-encapsulated concentrated Simple Green for hundreds of uses. Just wet with water and squeeze to activate. The nonabrasive pad works well on all washable surfaces around the house and is great for auto tires, wheels, and rubber bumpers. Safe for delicate surfaces such as tile, teak, formica, marble, and fiberglass, yet tough enough for grimy tubs, scuff marks, and barbecue grills.