Amazon.com: Holikme 30 Feet Dryer Vent Cleaner Kit, Flexible Lint Brush with Drill Attachment, Extends Up to 30 Feet for Easy Cleaning, Synthetic Brush Head, Use with or Without a Power Drill :
How to Clean a Dryer Vent - This Old House
How to Clean a Dryer Vent - The Home Depot
How To Clean Your Dryer Vent Duct - Step By Step - It's Super Simple! - YouTube