Our house was built in 2006, so after 14yrs, we felt it was time to get the ductwork and dryer vent cleaned. I have year round allergies and felt a thorough cleaning could improve my condition. Our techs, Jason and Vern, explained the process, answered all our questions, and were very professional and courteous. We all wore masks and I felt comfortable with them being in our house. The post-photos did indeed show a definite improvement – thoroughly cleaned, down to the galvanized metal. I would highly recommend Safety King to anyone.