Aqua Mix Eff-Ex is a non-acidic, heavy-duty cleaner that removes and prevents the formation of efflorescence. Eff-Ex utilizes Aqua Mix EX-2 technology to create a powerful product that cleans and prevents efflorescence without harsh acids. Aqua Mix Eff-Ex can is recommended for all natural stone, such as marble, granite, slate, travertine, and limestone; porcelain; quarry; saltillo; terra cotta; cement pavers; masonry surfaces; and other porous tile and grout where a natural look is desired. Aqua Mix Eff-Ex can be used for interior and exterior applications. It will lightly dull the surface of polished marble, limestone, and travertine, and re-polishing may be needed.