Dryer Vent Cleaning did a great job cleaning out all my ducts. I am sure that it hadn't been done in the ownership 25 years prior to my owning this house. I bought this place May 2013 and by August was doing a major remodel of which we poured dust into the house and of course the vents and ducts. The technician took pictures of 'before and after' and you can see the results. Great job and keep up the great work!