If You Care 100% Biomass Firelighters are made with wood from FSC®-certified forests and 100% non-GMO vegetable oil. If You Care 100% Biomass Firelighters are perfect for fireplaces, grills, wood burning stoves and ovens, campfires and/or outdoor fire pits. They are non-toxic and harmless when in contact with plants, vegetation or aquatic organisms. They can be safely stored near or with food. Some firelighters contain kerosene and/or paraffin wax, all derived from petroleum, and therefore based on fossil fuels. If You Care 100% Biomass Firelighters are made from 100% renewable resources.