Complaint / Review
Grout Bully
Consumer Report

I've had the Grout Bully package for about 10 days now. I has really cleaned up the grout lines in my office bathroom. I have some left over so I may be able to use it on my bathroom tiles at home too. They aren't that dirty though. Just had them regrouted. Grout Bully really helped me out though. It took a little over 2 weeks to get.

Does it work? Yes.
Does it do what it claims? I have no idea. But floors look great.