Cutter Lemon Eucalyptus Insect Repellent, Pump Spray, 4-Ounce, 6-Pack REPELS MOSQUITOES: DEET-free formula repels mosquitoes, including those that may carry West Nile virus. WITH OIL OF LEMON EUCALYPTUS: The active ingredient in Cutter Lemon Eucalyptus Insect Repellent is derived from the leaves of the Lemon Eucalyptus tree. REPELS MOSQUITOES THAT MAY CARRY WEST NILE VIRUS: Creates a barrier against annoying mosquitoes that can spoil the outdoors. FRESH, CLEAN SCENT: Cool lemon eucalyptus scent  never feels oily or greasy. LASTS UP TO 6 HOURS: Reapply once daily as needed (up to twice per day).