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-Gallon)

This formula is just fantastic! I’ve tried ANOTHER product not as effective which I had to return for its strong chemical smell. I have asthma and could not tolerate the smell even with a mask. Black Diamond has a pleasant non-toxic clean smell. I was indeed impressed with its effectiveness and how easy it was to clean 13 years of dirt on my floor tile grout. I used a plastic squeeze bottle to apply the cleaner, waited 5-10 minutes, scrubbed the grout with a long handle brush I found in Amazon (to avoid bending or kneeling over) and saw the magic happen before my eyes. Amazing results! I’m extremely satisfied with this product. I did finish cleaning the grout with my steamer, but just as an additional step to disinfect the floors. I’ll buy this product again.

Wow! This is the best of the best grout cleaner, zero smell, it cleans grout fast my tile floors never looked so good. I am on my second bottle its worth every penny. It lives up to its name fast action grout cleaner, would highly recommend. It definitely works and my floors and grout are sparkling clean.

This grout cleaner is genuinely effective — it lifted years of dirt and grime that other cleaners barely touched! The quality of the cleaner itself is impressive, and the included brush makes it easier to get into tight grout lines. It’s definitely a powerful cleaner that delivers results without damaging tile. That said, the bottle design could be better. Mine had a bit of leakage during shipping, and the solution is slightly sticky when it dries if not fully wiped up. The smell is noticeable but not overwhelming — more “cleaning chemical” than fresh scent. The bottle and spray nozzle feel durable, though, and it should last a while. Overall, a great product for deep cleaning grout — just be mindful of the slight mess factor!

I used this with a spin scrubber on very stained grout, and it did a great job. The grout looks new again.

I just received this. Tried it out on our guest bathroom LVT. Not super impressed. I followed the directions, leaving it on for about 3 minutes. Though somewhat cleaner, not like the areas of grout that are still almost white. I'll keep using it but after using it once, disappointed.

I always read the reviews but try to take them with a grain of salt: is it really that amazing. This one is. I used it first on a small bathroom floor with white grout-or what used to be white grout. First I noticed that it didn't stink. I am super sensitive to smells and this did not have a smell, not even a perfumy one. Other than the spots where the grout had broken up and patches are needed, it did great. Perfect-probably not but that grout is at least 10 years old. It gets washed and I have tried some other products with no difference. This made a RADICAL difference! So I kept going to the kitchen with dark grey grout. What i liked out there was it cleaned the tile in the tight spots near doors and the stove that get grimy but a swiffer just doesn't do enough for. The grout looked better too. My one complaint is the product seems to leave a soapy residue. I don't own a sponge mop so trying to clean that up was difficult. I would suggest making sure you have a traditional mop of some kind to wash the floor with after. Swiffer won't work.

Worked very well with minimal scrubbing. My grout hasn't been cleaned since I moved in. I sprayed this let it soak for 5 mins then sprayed a Clorox all purpose and it came right off. I did the process twice because of all the build up Before and after

Works great on soap scum but not so good on grout.

Excellent, you have to work with it, that is use an old tooth brush to work out the dirt cos it not magic, you wont be dissatisfied if you do your part.

I bought my house and the floors looked like they hadn't been cleaned since they were originally installed. The before and after are mind blowing!! I didn't mind the smell of the cleaner. It made it smell.. clean. 5 star review Highly recommend this product.

Good product, quick delivery, would recommend

Used on grey grout it does work but took a few applications I found it easier to brush on lightly as solution strong and can damage other surfaces

Buenísimo para limpiar las juntas de los azulejos o pisos de cerámica Me parece caro pero es muy bueno