Black Diamond Ultimate Grout Cleaner: Best Cleaner for Tile, Ceramic, Porcelain, Marble Acid-Free Safe Deep Cleaner & Stain Remover for Even The Dirtiest Grout. (1-Quart/1-Gallon/sm brush)

Yes it cleaned the grout and keep a high traffic area clean for months.

Wow—this stuff really works! I recently purchased Black Diamond Stoneworks Ultimate Grout Cleaner for my kitchen tile floors, and I’m seriously impressed. Years of built-up grime and dirt were no match for this cleaner. My grout looks brand new! I’ve tried other products before, but nothing has delivered results like this. So pleased with my purchase—definitely a game changer for anyone dealing with stubborn grout grime!

Pros - low odor, easy to apply, not irritating to skin, works well in light to medium staining. Easier to clean up out of grout than any powder or granular product.Cons - need to apply dnd scrub longer and more than once on tough stains.In the end, elbow grease and a good grout brush are necessary no matter what you use on heavier stained areas.

Amazing how quick it works without breaking your back and scrubbing.

I purchased this item to clean the grout on my kitchen floor. I figured this would do the trick. We are a very clean household and do not wear shoes inside and my floors are deep cleaned every other week. The grout just seems a little stained, and I was hoping this would brighten it up. Sadly, after lots of scrubbing, the grout looks the same.

Our white tile floor with white grout was very dingy after 3 years of use. We discovered one factor was using a steam cleaner on it, because it forced the dirt into the grout areas. Only Swiffers from now on. Anyway this cleaner brought it back to new. It does take some work, doesn't just swipe off, need lots of scrubbing, but worth the effort.

This product was disappointing. Marginally restored grout. Rated as one of the better products it was not that effective.

I had tried numerous products for dirty shower grout but this is the only product that worked well. Highly recommended.