Bring your grout back to a clean, refreshed look—without risking damage to your surfaces. Black Diamond Stoneworks Ultimate Grout Cleaner is a professional-strength, acid-free grout cleaner designed to remove deep-set dirt, grease, and buildup while protecting grout and surrounding tile. Unlike traditional acidic cleaners that can weaken grout and etch natural stone, this formula delivers a powerful clean without harsh acids. The non-acidic formula is safe for use on marble, granite, travertine, ceramic tile, and colored grout, making it a reliable choice for both delicate and high-traffic surfaces. It effectively breaks down soap scum, oils, and everyday grime, helping restore the natural appearance of grout lines without discoloration or surface damage. Developed for real-world cleaning performance, Ultimate Grout Cleaner is ideal for use in bathrooms, kitchens, showers, and tile floors. Whether you are maintaining your home or tackling heavy buildup, it provides consistent, dependable results. Application is simple: spray directly onto grout and tile, allow 1–3 minutes for the formula to penetrate, agitate with a brush, and rinse clean with water. The result is visibly cleaner grout and a refreshed surface. This product is not intended for removing calcium deposits or hard water stains. Proudly made in the USA, Black Diamond Stoneworks Ultimate Grout Cleaner reflects a commitment to effective, surface-safe cleaning solutions designed to make cleaning easier.