Bests & Worsts Reviews from Amazon

I had tile with pale grey grout put in a large part of my house about a year ago, and thanks to dog footprints and general grime, the grout was looking really dirty in high traffic areas. Regular upkeep was just mopping the floor with a mix of lysol and water, and that wasn't kept the tile clean, but not the grout. I tried this exactly per directions, and, while it did make the grout a bit cleaner, it was hardly noticeable - especially considering you have to manually brush every grout line. For the sake of comparison, I tried it alongside lysol power scrub bathroom cleaner (no bleach). The lysol, used the same way, produced a much better result - left the grout looking about 50% cleaner than this product.