The fuel we recommend to people are the wood pellets. Wood pellets are made of sawdust, wood, kernel and a lot of other materials so they burn slow and clean. The compressed wood pellets make sure that there isn’t any form of toxic gasses or smoke while burning. To light the fire, it’s important to do this as clean as possible. For that reason, we recommend using non-paraffin firelighters. The Greenlite Firelighters are made of organic oils and biomass.