- Maxout Deep Grout Cleaner, Powerful Tile and Floor Cleaning Liquid, Ready to Use, 32oz

For 15 years I have been cleaning my tile floors with an electric floor scrubber. Though it cleans the tiles, it doesn't clean the grout. I have bought and tried many "grout cleaners" that did not work. This stuff - WOW! It pulls the dirt right out! I used a battery operated scrubber from Amazon, so I didn't need to kneel down to scrub. If your grout is really dirty like mine, it will take time and effort. Cleaning up the dirty suds on your tile will take some doing. I used my Hoover Floormate to get what I could, then wound up Swiffering. It is still a work in progress, but well worth doing.

This product does work but do do you. The grout did come out cleaner but not as sparkling white as desired. No fumes or caustic chemicals. I used the scrub brush and followed directions exactly. Next time I will leave product on longer than the directions

First image is the same room of floor not cleaned. Second is cleaned and washed. Same room, different section. I have 1/2 inch solid marble and it worked just as instructed! I used a kitchen brush and scrubbed it. Let it sit for 15 minutes and then washed it with a norwex towel of just water. It looks like new. I have a lot of floor left to do, and it will take more solution, it doesn’t go super far. Definitely worth it! Marble not harmed, it actually looks better and no residue.

I wish I could say I was swept off my feet as most of the other reviewers stated but as high as my hopes were this cleaner did nor work for my grout problem. I have small hexagonal white marble (would never do again BTW!!!) incl. white grout as my shower floor and even though I clean it sporadically, the grout became orange looking from the minerals in the water over time- despite using a squeegee after each use. I used dish soap, a brush and elbow grease before and that helped some but it is a tremendous amount of work. So I had high hopes with this cleaner and left it on for 15 min., scrubbed, more cleaner and another 15 min. and despite scrubbing as hard as I could it did not come out any whiter than using soap & water as done before. Sorry, I wish I could just pour a harsher cleaner on it but don't want to ruin my marble..... Bit bummed out to say the least.

DID NOT WHITEN MY SHOWER FLOOR TILES AS I WANTED.

THIS PRODUCT CLEANS GROUT ON MARBLE FLOOR VERY WELL. YOU WILL NEED TO USE A NYLON BRUSH ON YOUR DARKEST GROUT LINE AND SCRUB IT A LITTLE. THIS IS A GREAT PRODUCT.

This s the only thing that will get my grout clean on my shower floor. I have herringbone marble tile so there are a lot of grout lines. I put it in a spray bottle and let it sit for about 15 minutes before I start scrubbing. I wish they would make a spray bottle version. Highly recommend!

Works exceptionally well when the grey grout around my marble begins to turn a peachy pink color (it’s a common bacterial growth called Serratia marcescens that occurs in bathrooms due to the humidity). The only reason I removed a star is because this cleaner is quite expensive. I will be looking for another product that works as well for a lower price.