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-Brush)

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!

The GOAT of grout cleaners. And I’ve tried them all. This works quickly, no odor, very little effort needed. And I’m a 69 yo woman. Wish I had found this decades ago. Great product. Worth every penny.

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!

This cleaner lifted years of grime in minutes and made my grout look brand new. Minimal scrubbing, no harsh smell, and results that genuinely impressed me. Totally worth it.

This cleaner got great reviews but required an over abundance of scrubbing. Next time I’ll just use comet…it’s cheaper

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.

Happy New Year 26 .. Love This Cleaner ... WOW !! years of black crud shower tile. see photos ... I've been living in this 80's built condo since 2011. The last few years tried EVERYTHING to clean the black around tiles / soft grout / caulk, whatever it's called. NO LUCK .. tried DYI' formulas, tried bleach scrub powder, bleach, mildew remover. NO LUCK. I bought drill attachment brush set a year or 2 ago also, did not help. TODAY, rec'd this product Amazon overnight. I relied on the reviews, best judgement ever on purchase. The brush included worked great on the corners, but I used the mentioned drill attachment for large areas. Yes bought Amazon a while ago, were quite cheap and paid off today. Just look at the nasty black leftovers in tub. 4 hours or more cleaning since the drill battery died after 10-15 minutes per round. Recommended!! I ordered a second bottle just now.

I bought the large gallon size and then transferred some to a smaller applicator bottle. I applied it to the grout, let it sit for about 10 minutes, and then scrubbed it with a grout brush. The product foamed just the littlest bit during scrubbing. The scent is light and not unpleasant. While it was wet it was hard to tell if the product was working but once the grout dried I could see that it was clearly cleaner.

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 wasn't sure this product would work on the grout in my mudroom...but I trusted the reviews and am glad I did. This is very easy to use - and does work in 1-3 minutes!! I did my entire mudroom (10 x 12) with 1 spray bottle and it still has about 1/4 of the solution left. I did use a spin brush (Leebein spin scrubber with battery & USB charger) and a microfibre chenille mop for clean up (tried a swiffer but you need something bulky to get down in the grout lines to clean up). Be prepared to rinse your mop numerous times..you won't believe the dirt that comes out!

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