Repel Lemon Eucalyptus Insect Repellent Pump Spray is an effective alternative for people who may not want to use traditional chemical repellents, such as DEET, but want long lasting protection against biting insects. Naturally derived, Oil of Lemon Eucalyptus (OLE) is isolated from the leaves of the Eucalyptus Citriodora tree. This repellent is effective for up to 6 hours against the deer tick, which transmits Lyme Disease.Effective alternative to chemical repellents. Naturally derived Oil of Lemon Eucalyptus is EPA registered and tested in accordance with EPA guidelines. Primary active ingredient is 65% p-methane-3 and 8-diol. Up to 6 hours of protection, 4 fl. oz.