I burn hot and clean and here is why. I decided it had been about 2 years since I cleaned and I should give it a check. that sounds bad but I seldom have anything at 2 years over the last 11 I worked up 1 year for a few then 2 years. I was out running errands all morning and had let the fire go out so when I returned home I cleaned. but I had the idea to take it a step further and send my phone up as a before and after taking video I don't have a good way to post the video but I grabbed some stills. I clean from the bottom I have a 12/12 pitch roof and the stove pipe extends 6 feet out of the roof . I know this concerns some people that I will plug the cap. but here is the photo proof it works at least for my set up. the phone up the chimney was fairly low tech I painters taped the phone to the fiber glass chimney rods started a video with the light on then send it up add a rod send it up it is just about 16 feet 4 for foot rods exactly from the ceiling thimble then turn around when I hit the top slowly and come back down.