Krud Kutter 1 Gal Concrete and Driveway Pressure Washer Concentrate penetrates and dissolves tough stains on concrete, brick, masonry and asphalt. Contains "Oil Grabber", a unique additive which penetrates the surface to dissolve tough stains from grease, oil, algae, mildew and dirt. Prepares surfaces for finishing by promoting the adhesion of paint, stain and sealers. Use to safely and effectively remove stains on concrete, asphalt, brick and masonry, leaving the surface completely clean, Oil grabber additive helps breakup and dissolve tough stains on driveways. Product is ready to use in pressure washers or can be diluted for use in a pump sprayer,When diluting for pump sprayers, use 1-1/2 cups product to 1 Gal of water. Non-toxic formula provides a superior clean with no harsh solvents, Gives a superior clean with no bleach or ammonia. Environmentally friendly, safe for people, pets and plants.