Ready-to-use, d-limonene based cleaner formulated to remove stubborn grease and soils from all kinds of hard surfaces. Cleans thoroughly without surface-damaging, harsh chemicals. Penetrates rough, porous surfaces like concrete and cement to remove grease and oil stains. Convenient spray-and-wipe application for heavy-duty jobs. Application: Driveway;Garage Floor;Parking Lot;Retaining Wall;Sidewalk; Applicable Material: Asphalt;Brick;Ceramic;Concrete;Stone; Chemical Compound: D-Limonene. ~ Includes four 1-gallon bottles per case.CPC04166. 04166. Ajax Ajax Expert Outdoor/concrete Cleaner, Citrus Scent, 1 Gal. Bottle.