This kitchen tiled floor had not been cleaned in 10 years, besides the occasional mopping. All the grout had turned into a dark brown color from dirt build up. Although it all matched, it wasn’t clean. With their tiny granddaughter progressing to the crawling stage, they wanted to make sure their floors were sanitary.
We used a light detergent and removed all the dirt from the grout. You can see the results on the image. Not only can their granddaughter now crawl on this tile, they’ll be able to eat off of it!