Cleaning showers and baths is hard enough and when you add granite cleaning and other natural stone care to the task, it shouldn't make it more difficult. Ordinary, everyday shower and bath cleaners can damage natural stone and lead to costly repair and replacement. Our streak-free formula safely deep cleans granite, marble, travertine and all other natural stone and ceramic shower walls and tub surrounds without damaging natural stone surfaces. Regular use will help prevent mold, mildew, soap scum and hard water deposits.