In comparison to the outdated brush and pole strategy, There exists none. I joke with my clients indicating I truly feel like I must give refunds to everyone who I cleaned that has a brush. The spinning approach does a much better job. The spinning strategy also includes glazed creosote https://www.google.com/maps/d/edit?mid=1GjdBxd3c7dq_F5Fo8pNXpVc26rlFsVw&usp=sharing