Catalytic stoves and retrofits are designed to burn natural wood only Burning materials other than natural wood will appreciably shorten the life of the catalyst. Use quality fuel wood that is available in your area. Do not burn trash or garbage, artificial or paper logs, gift-wrappings, coal, lighter fluids, chemical starters, treated or painted wood, driftwood or chemical cleaners. These contain chemicals that may cause the catalyst to become deactivated, and may release toxic particles or gases into the air.