Found a piece of duct insulation by one of my vents. Was told by Dekes that it could have been a loose piece that finally came off and to not worry at the moment and just to monitor. Found the person to be genuine and helpful. Did not have the impression of trying to be sold something. If the need arises I would contact Dekes again. Also, would refer people I know. 5 star rating from phone conversation and general impression.