Care Plus Insect Repellent will repel mosquitoes for 4 to 6 hours and ticks for up to 5 hours. This unique formula is guaranteed to repel mosquitoes and ticks. The active ingredient in Care Plus is derived from the leaves of the Lemon Eucalyptus tree. When used as directed, this pest control product repels Ticks which may transmit Lyme disease, Rocky Mountain Spotted Fever, Tick-borne Encephalitis, Powassan Virus.