Compared to the previous brush and pole approach, there is none. I joke with my clients declaring I experience like I really should give refunds to Every person who I cleaned with a brush. The spinning system does a much better career. The spinning technique also incorporates glazed creosote removal. https://www.google.com/maps/d/edit?mid=1IBkqAXMusA5Vp99eQSwawu-GpsWXHJw&usp=sharing