Get your next adventure started with Cutter Lemon Eucalyptus Insect Repellent pump spray! The Oil of Lemon Eucalyptus-based formula repels mosquitoes including those that may West Nile virus for up to 6 hours. This active ingredient is derived from the leaves of the Lemon Eucalyptus tree. This DEET-free repellent isn t sticky or greasy and it leaves behind a cool lemon eucalyptus scent. To repel insects apply to all exposed skin and clothing.