Bests & Worsts Reviews from Amazon

We had our time professionally cleaned and were totally disappointed. Being the grout was 20 years old, just impossible to get cleaned to new. The guy recommended grout cleaner/paint. I tried this and oh my goodness. It's amazing. Takes a toothbrush, a paper towel and some patience, but the difference is unbelievable. They measured over 300sqft of tile and I still have 1/2 a bottle left!