NatrapelA(R) Lemon Eucalyptus Tick Repellent is a plant-based solution to protect the whole family from ticks for up to 4 hours. Oil of Lemon Eucalyptus is the only plant-based active ingredient recommended by the CDC, and it has a refreshing scent with a non-oily feel. Natrapel A(R) Lemon Eucalyptus Tick Repellent protects you from ticks that may carry Lyme disease, and the plant-based formula won't harm your clothing and gear.