Does anyone out there use this stuff? As I understand it, you spray it into the firebox and onto the wood. Am I supposed to do this regularly, like everyday? Am I supposed to use it for a few days before I intend to sweep the chimney, or just all the time? Because of a steep roof and the 10 - 2 rule, I have a really tall stack. I had a chimney sweep come out last year. He was taller than I am and as I recall, he had no easy time getting the brush in and running it down. I want to be able to sweep my own chimney, so I would appreciate any input regarding the use of the Rutland spray, in particular, and chimney sweeping in general. Also...where can a guy get a 40 foot extension ladder? Thanks.