Before sharpening, apply a thin stream of this white mineral oil to the surface of the stone, then spread the oil over the entire sharpening surface. Honing oil can alos beused to clean the stone by applying a small amount and rubbing it in a circular motion all the way down the stone. Wipe off the metal particles that rise from the stone with a clean rag, rinse the stone under running water and dry with a rag. USDA rated H-1 and odorless. 4 oz. bottle.