Oxi clean uses the power of oxygen to get rid of stains on clothes carpets and a host of other surfaces. It is formulated to work best when used as a pretreater, before washing your clothes has advanced technology that fights grass, grease, and dirt stains. It also removes Mildew, Algae, fruit stains, wine stains, pet stains, odors. It also works like a charm on tile and grout stains and can be used to wash carpet and upholstery. So now you don't have to buy different cleaners when you get everything in one.