Tick Attack™ Botanical Insect Repellent contains a botanical insecticide derived from the leaves of the Lemon Eucalyptus tree. Leaves of healthy eucalyptus citriodora trees are sustainably harvested, then steam distilled to extract oil that contains a powerful botanical compound, and the key to Tick Attack™ Botanical Insect Repellent’s incredible 100% repellency. The remaining formula ingredients are naturally occurring organic compounds.