Vernon did an extraordinary job. Despite the fact that it was getting late in the day he refused to compromise on the cleaning and it just takes as long as it takes to do it right. These ducts probably had not been cleaned in 30 years and there had been lots of plaster work done during renovation. When he was done the photos showed the ducts shining and clean throughout. Great work and clean up on completion. I do flip homes and will use them again in the future.