We got air ducts and vent cleaning done today. Al and Francisco were the two individuals who came to do the work. HIGHLY PROFESSIONAL and UNOBTRUSIVE, we continued to do what we had to do and they went about their business very carefully and methodically. We asked if they could use boot covers, they did it immediately, and they removed them every time they stepped out and wore them only when they came back in. VERY PLEASED with the job they did. We have had many bad experiences in the past with other companies. We have had Advanced Duct Cleaning come twice recently and both times we have been pleased with the outcome. We recommend them as well as their two professionals named above.