High efficiency stone, concrete and grout cleaner eliminates stains and discolor- ations caused by minerals, rust, and more. 3% Buffered Hydrochloric Acid Con- centrate. Can be diluted.SSR-100$22.90PriceSize*SelectQuantity*Add to CartPRODUCT INFOPRODUCT BENEFITS:Non FumingNo Offensive SmellNo Vapors Safe to Stainless Steel • Easy Clean upNo Respirator neededUSE ON:Natural StoneGroutFountain Tile and GroutInside or OutsideConcreteBrick and BlockPRODUCT USE EXPLANATION:Spray on surface to be cleanedLet dwell for a few minutesAgitate with a brush if necessaryWipe cleanRepeat if necessary