What is the best lining to use in ducts connected to dryers?

This hour, Paul and Courtney go over why "for sale by owner" may be the best option for your as well as some pitfalls you should keep an eye on if you decide to sell a piece of property that way and Courtney tells us about some of the best literature she's come across that could help new and old real estate investors alike before closing out the hour helping a caller fix an issue with the lining in the duct work connected to their dryer unit!