The TIKI Insect Repellent Refill Liquid for Mosquitoes 0.54 fl. oz. is a compact, heat-activated repellent refill designed to be used with compatible TIKI Brand vaporizer or repellent devices. Pre-filled with a proprietary liquid formulation containing the active ingredient metofluthrin, this refill releases a silent, invisible vapor that helps repel mosquitoes in outdoor or semi-enclosed spaces.