I always thought I wanted tile flooring and I do like it but the grout has sure made me rethink about ever wanting tile again. I tried everything I could think of (and more) to clean the grout with no success. When we move into our current home 7 years ago the kitchen tile was brand new (grout was off white in color). After 7 years and lots of money invested in cleaning supplies the grout was black and looked terrible. I was constantly complaining about the floor and threatening to tear up the tile until I seen this product. I am so glad I decided to order it. My flooring looks brand new again. i am telling everyone I know that has tile flooring about this product.