Ultimate Grout Cleaner for Tile & Grout, Acid-Free Stain Remover, 1 Gallon

Wow, I'm impressed. I can't believe how easy and fast this was. I did my whole house in a couple hours. I sprayed it on, let it sit a few minutes and then used a stiff brush to remove the dirt. I got one that you don't have to bend down to use. Perfect. I then rinsed the floor and enjoyed the nice clean grout! There is no smell and only a small amount of residue that I'm sure will come off with the next full floor wash I do. I'm thrilled!

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.

Works as well as anything I have used. Still requires a scrubbing.

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.

I wish I had taken a before picture! I sprayed it on my grout lines on the shower wall tiles, and the grout between the penny tiles in the shower floor, let it set a few minutes, then took a medium bristle brush and scrubbed lightly. I'm super impressed with how well it worked! No strong odor either!

When this product arrives it cleans grout lines very nicely, both with a machine and by hand. Unfortunately, I ordered another bottle of this grout cleaner, it failed to arrive. I was refunded. I re-ordered it. Again, it failed to arrive. I was again refunded. Not sure if this is the third-party Seller having supply issues, or Amazons distribution system being over-loaded due to the time of year. However, I need to complete the work, so I am not going to re-order it for a third time.

Does not clean at all it’s garbage do not waste your money

Works really good

still need to used some brush to removed deep clean

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

This product did absolutely nothing to clean the grout between the tiles in my shower. All talk and no action. The tile looks exactly the same before and after applying the product.

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!

I tried this on my grout tile in my kitchen and WOW it worked like a charm. I also bought the long brush to work the solution into the grout. This saved me so much time and energy!