Use this product to safely clean and shine granite, marble, and quartz countertops, and other polished stone surfaces. Granite can withstand a lot of abuse, but it doesnt tolerate acidic or alkaline cleaners well. Highly acidic cleansers (including vinegar) can damage granite and other natural stone surfaces, leaving dull spots and scratches. Bar Keepers Friend Granite Stone Cleaner Polish is pH-balanced to safely clean natural stone. Shake product well. Routine cleaning: Spray directly onto granite or stone surface. Wipe clean using a soft, clean dry cloth or paper towel wiping in a circular motion. Soft, clean microfiber cloths work well, too. Heavier soils/greasy areas: Spray cleaner onto granite or stone surface surface. Let stand about 1 minute. Rub surface lightly with a non-abrasive, nylon-mesh sponge or microfiber towel. Wipe the surface dry with a clean, soft cloth, paper towel, or microfiber cloth.