My property management company sent this company out to our home after my daughter and I had been dealing with major upper respiratory ailments and asthma. Ron was very personable and answered all my questions. The technician that came was very nice and pleasant and has been with this company for 14 years (this company has been operating in Vegas & dealing with the casinos for over 30 years). He explained to me that he was pulling out a lot of fine white construction debris that could definitely be causes problems with our asthma. He even showed us how much was accumulating on the air vents alone. We had a lot of our vents installed backwards, so that the vents wouldn't even turn out towards the room. We've lived in this house for 6 years and it stood vacant for 3 years before we moved in. We would hands down recommend this company to everybody! I went out and told my neighbor right after the guy left that she need to use them for their home. Turns out her husband has been sick with upper respiratory infections too and they also have small children.