The EPA on Monday approved the use of a chemical that repels and kills mosquitoes and ticks. Nootkatone, an oily compound found in cedar trees and grapefruits, is safe because it is not toxic to humans and many other mammals, as well as fish, birds, and bees. Products containing nootkatone could be used to fight ticks, mosquitoes, and fleas – insects that can pass on many diseases to humans, including malaria and Zika. It may be effective against other pests, including lice, sandflies, and midges.
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In smaller doses, nootkatone repels a variety of insects and in higher doses, it can kill those same insects.
Nootkatone can kill bugs that are resistant to some commonly used pesticides, such as DDT and pyrethroids.
Unlike other organic insect repellants, such as citronella, peppermint oil, and lemongrass oil, nootkatone has a long-lasting effect.
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