Sure Klean® Restoration Cleaner is a concentrated compound formulated as a carbon solubilizer. Used properly, it cleans brick, granite, sandstone, terra cotta, many exposed aggregate surfaces and other masonry except limestone, marble or concrete. This product has been safely and effectively used to clean historic structures throughout the United States and Canada. When properly used, Sure Klean® Restoration Cleaner is safer and less expensive than sandblasting or steam cleaning. Application to masonry surfaces loosens and dissolves dirt, paint oxidation, carbon buildup and other atmospheric pollutants. A simple cold-water rinse removes unsightly stains.