Kerosene is not usually recommended as tiki torch fuel for indoor use as it produces an unpleasant odor, and may become poisonous in non-ventilated areas. Kerosene is not as refined a fuel as the citronella oil or paraffin oil we suggest and offer. Kerosene will smoke, leave soot residue and not last as long as citronella tiki torch oil or paraffin oil.
Once you select a fuel, stick with that fuel for best performance. A wick cannot use different oils as it will not draw as efficiently. So, if you decide you want citronella oil, then always use citronella oil. The only way to switch is to change to a new tiki torch wick when switching to a different fuel.