The Dual Action Sponge is for cleaning grease and dirt from all bodywork, bumpers, lights, trim, chrome and glass. e-auto products are so powerful, they can clean using just water. They will also perform well with a small amount of your regular cleaning liquid. e-auto cloths have 1.6 million fibers per square inch. By using e-cloths unique fiber technology with water, they break up and hold dirt, grime and grease which normal cloths leave behind.