I had my chimney cleaned yesterday. We skipped last year because when I removed the pipe and had a look in there all I saw was a little dust the whole way up. The sweep could not believe that I had burned 8 cords. He said that I could easily go three years. No creosote, just some dust that he knocked down and vacuumed up. He did do a nice job cleaning up the stove though. The dry wood and the cat are doing what they should be doing. The sweep said that he is finding that folks with cat stoves all have very clean chimneys. He was also pretty impressed with my 12 cords of stacked wood at the house. It must have looked good from the roof. I'll be happy not to pay him again for a few years.