The guy's we're very professional, and they knew their job well in explaining everything, which made me very happy that I was getting a job done well, and not a flighty job done poorly, in which we had done on other Job's performed at our house! Also they both we're very polite, & friendly which makes a person comfortable to have them in you're home! And from the pictures of the vent's before, & after cleaning, we we're very pleased with the cleaning! And the house has smelled so good during, and after their cleaning, & sanitizing of the ventilation system, that we also had the allergen chemical sprayed for even more clean air protection, as I have asthma, and my boyfriend has allergies, so we are excited to see how this helps us out!. And before the guy's left a gentleman stopped by stating him & his wife we're interested in getting their ventilation system cleaned,...