The Advanced Duct Work guys came in time and did a very thorough job of not only cleaning but also identifying issues that needed addressing. My furniture was too close blocking off vents and uptakes. They washed all vent plate covers and reinstalled carefully and even better than they had been on the walls. My dryer vent was bent and blocked behind the dryer. They fixed it ! My bathroom exhaust was filthy. They cleaned it. I am breathing much better than I ever have at home. And Trey vacuumed up after themselves. Perfect job