I was helping my brother clean out an old rental property last weekend, and we noticed the dryer was taking forever to finish a load. When we pulled the machine away from the wall, there was much more lint than we expected. It made us realize the duct probably hadn't been cleaned in years. We only had a basic vacuum and a small brush, so we knew we weren't really doing a complete job. That got me wondering what professionals actually use when they clean dryer ducts. Are there special tools that make a big difference compared to what most homeowners have?