Mop. Water. Done. Thanks to a professional string mop design and absorbent microfiber material that holds many times its weight, these soft mop heads by Don Aslett rid hard floors--even hardwood--of dirt and grime using only water. When one side is dirty, just flip it over and keep on going. And for really tough stains, use a little extra pressure to employ the microfiber scrubbing ring at the bottom of the mop. From Don Aslett.