We purchased a house about a year ago and my kids have been sneezing and coughing since we been here. Mark from Trojan Carpet Care came and cleaned our carpets and after talking to him about the kids he recommended getting our air ducts cleaned also. We decided to wait on the duct cleaning. The carpets look great but the kids were still having the same problems. So a month later Mark came by and cleaned our air ducts and dryer vent and the kids are doing much better. I wish I would have done this sooner thanks again Trojans.