I had Abbott give me an estimate for power washing my 3 car driveway and sidewalks. The back sidewalk looked like a mass of mass of moss and slime that could never be cleaned, but he came by to do it a few days later and it is amazing the difference. This sidewalk looke like new, and I know he went over it several times, as well as the driveway and front walk. His price was good too. I would recommend Abbott to anyone that wants a thorough, professional result. Go for it.