Effective plant-based insect repellent. Repels mosquitoes and deer ticks for up to 6 hours. Protects against mosquitoes that may carry West Nile Virus. Insect Repellent is made from a renewable resource. It is plant based and derived from oil obtained from the leaves of the Eucalyptus citriodora tree. Repel Lemon Eucalyptus gives you up to 6 hours of protection from mosquitoes and deer ticks. Made in the USA.