"After reading the first 2 reviews, I thought I had found my tile/grout cleaner. I have light color tile in both bathrooms, with sand color grout that has some more of a dark brown from wearing shoes and normal wear and tear for 4 or 5 years. I bought this product and a drill brush and figured I was all set. After using the product 2 or 3 times you can see the grout is noticeable lighter, but"where near as good as new. The cleaner definitely works, but its not as good as advertised. Would try something else next time.Minimal scrubbing my arse."

       "This is an amazing product. It restored my grout, which was originally a tan color and had become dark gray over a few years, back to normal with minimal scrubbing!"

       "I have light beige floor tiles with off white grout in my kitchen. I've tried many other products that were more expensive, but they didn't work HALF as good as this product. There is"'build-up' left behind and it really cleaned the grout to the point where I loved my floor again. When I ran out of it I saved the container and glad I did! After finally tracking this product down, I was only too happy to order it again."