I have kids around the house, and I’m very cautious about their well being. That is why I avoid calling up air duct cleaners. They use hazardous chemicals for air duct sanitizing and cleaning. After a long though, I finally decided to get the job done and called this company. They answered all my questions quite humbly and assured me they don’t use any such chemicals that are dangerous for the members of the house. And they didn’t fall short of their words.