I called Spotless Window because I had purchased a gift certificate they had donated to The World Pediatric Project Treasures in Paradise charitable fundraiser. That in itself is admirable, but in addition, the company was very professional, washers arrived on time, were polite, worked diligently all day long (I have a LOT of windows) and they even called an additional washer to come help them finish up in a timely manner vs. compromising quality by rushing through windows to finish the job. I am VERY happy with my clean windows!