I finally cleared that old farmhouse chimney after my uncle's weird trick
My uncle, who did this job for forty years, told me to always pack a bag of rock salt. He said if you run into a really tough, damp creosote plug, throw a handful up the flue before you start brushing. I thought it was just an old wives' tale, but I had a job at the Miller farm outside of town yesterday. Their chimney hadn't been touched in maybe fifteen years. I got the camera up there and saw this nasty, tar-like blockage about halfway up. Remembered what he said, tossed some salt up, waited ten minutes, and went at it with the poly brush. The stuff just crumbled away like dry sand instead of gumming up my rods. Saved me at least an hour of fighting it. Has anyone else tried something like that, or was I just lucky this time?