Plant-based. Repels Mosquitoes that may transmit the Zika, West Nile, Dengue & Chikungunya Viruses, Repels Mosquitoes for up to 6 hours. Citriodiol. www.repel.com. Questions or? Comments? Call 1-888-880-1181 or visit our website at www.repel.com. Contains No CFCs or other ozone depleting substances. Federal Regulations prohibit CFC propellants in aerosols. Aluminum can. We thank you for recycling.