Regal Flame Bio-Ethanol Fireplace Fuel 6 Quart Bottles Denaturated Alcohol for ventless bio ethanol fireplaces For child safety, bitterant is added as a human aversive. It's overwhelming bitter taste helps prevent accidental ingestion by children and small animals. Flame Arrestor Included For Safety 100% Clean Eco-Friendly Burning Natural Alcohol Clean Burning Fuel - NO Soot or Hazardous Fumes, Proudly Made in the USA