Ultimate Grout Cleaner for Tile Floors — Acid-Free Deep Cleaner Removes Grease, Dirt & Soap Scum Without Damaging Grout — Safe for Marble and All Natural Stone (1-Qt/1-G/ W/brush) — Open-Box, 29% Off

Acid-free grout cleaner – Safely cleans grout without harsh acids. Will not degrade grout or damage tile, marble, granite, or natural stone.

Powerful deep cleaning – Breaks down grease, dirt, and soap scum in grout lines. Designed to remove heavy buildup without harsh chemicals.

Safe on stone and tile – Clean marble, granite, travertine, ceramic tile, and colored grout without etching, discoloration, or surface damage.

Restores grout appearance – Lifts embedded grime to reveal brighter grout lines and improve the overall look of tile surfaces.

Fast and easy to use – Spray, wait 1–3 minutes, scrub, and rinse. Works with grout brushes or drill brushes for efficient cleaning.

Ideal for kitchens and bathrooms – Use on tile floors, showers, and backsplashes. Designed for routine cleaning in high-traffic areas.

Bring your grout back to life—without risking damage to your surfaces. Black Diamond Stoneworks Ultimate Grout Cleaner is a powerful, acid-free grout cleaner designed to safely remove deep-set dirt, grease, and buildup while protecting your grout and surrounding tile. Unlike traditional acidic cleaners that can weaken grout over time and etch natural stone, this advanced formula delivers a deep clean without degradation, discoloration, or damage. Developed through real-world use in demanding environments like commercial kitchens and high-traffic spaces, this professional-strength cleaner penetrates embedded grime and lifts it away with ease. It is specifically engineered to restore grout lines while maintaining the integrity of delicate surfaces, making it ideal for both residential and professional use. Safe for use on marble, granite, travertine, ceramic tile, and colored grout, this versatile cleaner gives you confidence with every application. It effectively removes soap buildup, grease, and everyday grime—perfect for bathrooms, kitchens, showers, and floors. (Note: Not intended for calcium or hard water deposit removal.) 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. The result is visibly brighter, cleaner grout without the risks associated with acid-based products. Proudly made in the USA, Ultimate Grout Cleaner reflects Black Diamond Stoneworks’ commitment to high-performance, surface-safe cleaning solutions. Because when it comes to grout cleaning, stronger doesn’t have to mean harsher.