Compared to the old brush and pole system, There is certainly none. I joke with my customers declaring I feel like I need to give refunds to Everybody who I cleaned using a brush. The spinning approach does a much better career. The spinning technique also incorporates glazed creosote removing. https://www.google.com/maps/d/edit?mid=1LVVTiorv-aX2PCSaf84cRXNb68yY7Aw&usp=sharing