A good way to ensure that the air in your house is free of dust, allergens, and mold is to hire the services of a Dryer Vent Cleaning Professional. A well-maintained vent can help keep your home clean and improve your indoor air quality. There are three main levels to cleaning a vent. First, there is the vacuum cleaning level. Next, there is the second level, where you need to be careful about bird nests and debris. And finally, the third level is working from the outside and inside of the duct.