text: I used AZ Chimney Sweep to clean our dryer ducts They did a good job although they did not really need cleaning but that was my fault We had the dryer vent ducts cleaned a couple of years ago I noticed alot of lint and thought it would just be ready to clean againnnHe did say that we should have to clean again for another years or so However just beware of the extra thirty dollars they sell you on the flex seal hose I thought that was a rip off but I did need a new hose I think that for the amount of hose I needed and the that I paid them they could have just NOT CHARGED for a small piece of hose I think this flex hose is a real money maker form them It probably only costs them pennies on the dollar Anyway that is businessnnOther than that I did like the company