RYOBI Foam Blaster Detergent soap refill is can be used with RYOBI Foam Blaster (RY31F04). Best used for washing Concentrate removes dirt, grease, oil, grime, road film and stains caused by algae, mold, and mildew. This product is formulated for use on vinyl, wood, brick, stucco, concrete, cement, asphalt, fiberglass, tile, stone, aggregate, metal, plastics and vehicles.