Compared to the outdated brush and pole system, You can find none. I joke with my customers indicating I experience like I should give refunds to everyone who I cleaned having a brush. The spinning method does a a lot better position. The spinning process also features glazed creosote elimination. https://www.google.com/maps/d/edit?mid=1IBkqAXMusA5Vp99eQSwawu-GpsWXHJw&usp=sharing