Reverse Skipper
The main lines are the cleaned with the reverse skipper, discharging compressed air in a 360 degree pattern again loosening any dust and debris in the main lines that will be removed by the vacuum.
Dust Mite Removal
Dust mites are in your home and mine. They are tiny insects that are so small they are invisible to the naked eye. However their feces and body parts are proven to cause asthma attacks for people who are allergic to them. According to the US EPA exposure to dust mites can cause asthma in children who previously have not exhibited asthma symptoms.