I have bought a new and the first furnace me. Did I previously made great thoughts as I always have a beautiful. Read a lot and thought about oh woe. Nope no problem thanks to the two cleaners. I use for 3 months still one of the two cleaners, still looks like new. I wipe only before starting the furnace slightly above the disk and it's super simple and easy spotless clean. When heated with coal briquettes and the oxygen supply so very small is on the back burner, it is a little more work is also super. To clean a breeze with logs and wood briquettes. I'm totally excited and they would buy again. Buy soon yet which give to because my friend makes the disc still with newspaper and ash clean. That must really be no more. Very high praise