UCO 9-Hour Citronella Candles UCO Candle Lanterns Insect Repellent 9-hour citronella-infused, insect-repelling paraffin candles for use in UCO Candle Lanterns; ideal for camping, hiking, outdoor adventures, survival kits, and emergency preparedness Each 3.5-inch candle burns for nine hours, with a pleasant citronella aroma Citronella oil formula repels mosquitoes and other virus-carrying insects Cotton wick is sized to maintain ideal flame height and optimize burn time Includes 3 x 3.5-inch citronella candles for use with UCO Candle Lanterns to create an economical source of outdoor warmth and light