I bought a new high tech dryer that almost immediately reported that my dryer vent was 80% blocked. After two unsuccessful attempts by another company I knew that I needed specialist help. I found Dryer Vent Doctor with a Google search and I could not be more pleased. Eslam is professional and skillful and I am finally up and running. I have a new vent cover (the old was was a major contributor to the blockage), a better quality dryer exhaust duct (the foil-like one that I had to buy with my new dryer was concerning me) and finally after almost 20 years a proper transition from the dryer exhaust to the vent!