Very Professional, good value and punctual. They did a great job, very knowledgeable about cleaning. I was worried about my Austin Stone (had black spots and some mold), didn't want scaring or joint damage. They came in, explained what they do was and with what and once it was finished, the stone looked great. I had they clean my 3600 sqft house, all stone and brick along with pool deck, patios and decorative stone around the flower bed. House looks like it was just built. I would definetly hire them again. Appt. was scheduled quickly, they arrived took care of business and they were done.