Compared to the aged brush and pole system, there is none. I joke with my customers saying I experience like I should really give refunds to everyone who I cleaned with a brush. The spinning method does a a lot better career. The spinning system also contains glazed creosote removing. https://www.google.com/maps/d/edit?mid=1ggA53P2cCx3FGFhJ0FNkARBC631vXFc&usp=sharing