Pro DIY said:I clean mine from the top with rods. My roof isn't that bad to get up and down from. I like using the rods because you can do a scrubbing technique with them. What I mean is i put the brush in the liner scrub up and down, lower the brush some more, scrub in that area up and down a couple of times and just keep moving down the liner a little at a time. I have one very flexable rod that I attach to the brush and then all of the other rods that I attach to the flexable one are a bit more rigid. This way the flexable rod can bend as the liner bends into the stove. I like to clean from the top down because I think it is cleaner then from the bottom up. Just remove the baffle plates in the stove. Close up the stove and start cleaning the pipe. When your done sweeping wait a couple of minutes for the dust in the stove to settle. Open the door, shovel out what came down, a little light vaccuuming and your done.
That's the way I did it this year for the first time. Got the brush and rods from Lowes. No problems at all and happy to have saved the money!