I immediately thought of the dirty grout lines on my tile floor in the kitchen. I then started to think 'well, what else can this stuff clean'. Too my surprise it worked quite well on the shower and gave it an instant cleaning. One day, while desperate to clean my shower and having nothing on hand I thought i try the only cleaner I had in the house Clorox toilet bowl cleaner with bleach. In the end, I always wound up only completing a small section of the floor before I got totally bored. Some were very expensive and you needed several bottles to complete one floor, some had a very strong odor, and others required a lot of time and scrubbing. All of them worked a little bit, but I always found something I didn't like about them.
So are you ready to FINALLY get your tile floors and grout lines cleaned? I have tried a few different products over the years, ranging from homemade mixes that I found on the internet to expensive grout cleaners.