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 stuff works great - we used this for our corporate tile floor that sees a lot of traffic. Lightly using the scrub brush took away the dirt easily. We have not found a product that does as well as this has. The smell is pleasant and not overpowering. Spray bottle works well and doesn't leak out of the handle like some do. We will see how long this cleaning lasts!

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!

Absolutely Amazing!! I’m used to products advertising great expectations without delivering but this product did exactly what it said it would do! The odor is tolerable and I didn’t have to do any heavy scrubbing. The brush it comes with was easy to use. I can’t believe that my tile grout is back to its original color! Highly recommend this product and will be keeping this on hand for future use.

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.

This really works! I have been looking for a product to clean the light grout between my kitchen floor tiles for some time. Other products I had purchased didn't do anything, but this is the best cleaner ever! It is so easy to apply and the brush that comes with it is perfect for scrubbing the grout. You only have to leave the product on the grout for 3 minutes, scrub with the brush and then rinse off. There is no smell with it and within a very short time my grout looks like new!

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.

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.

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

I have tried a lot of grout cleaners. Truthfully this is the most effective one I have found. You won't be disappointed. Albeit you are still on your hands and knees with a scrubbing brush, but you can actually see the dirt start to bubble up. You will need to wipe down each area where you apply the cleaner, but I would suggest that if you have a floor steamer, use this rather than just washing the floor with your usual cleaner.

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