Mighty Boy Stain Sucker is formulated with surfactants which lower the surface tension of the product. It also has a whiting agent in it to allow it to dry to a powder. When applied to a porous surface like stained concrete, the lower surface tension allows it to penetrate into the pores of the concrete and loosen up the stain. This is drawn up to the surface by “wicking” action during the drying of the product remaining on the surface. When completely dry the wicking stops and the product residue is swept off or flushed away along with the stain material which was pulled out of the pores of the concrete.