The E.P.A. has approved nootkatone, a safe and effective tick repellent found in cedars and grapefruit. It repels ticks, mosquitoes and other dangerous bugs for hours, but is safe enough to eat. This has added a new weapon to the fight against insect-borne illnesses like Lyme disease and malaria.
Diseases caused by the bites of ticks, mosquitoes and fleas have tripled in the United States in the last 15 years, the Centers for Disease Control and Prevention said in a 2018 report. They include Lyme disease, anaplasmosis and Rocky Mountain spotted fever from ticks; West Nile, dengue, Zika and chikungunya from mosquitoes; and plague from fleas.
The chemical repels mosquitoes, ticks, bedbugs and fleas — and, in high concentrations, kills them, according to the C.D.C. It may also be effective against lice, sandflies, midges and other pests, some of which can carry lethal diseases.
Click the link to read the entire New York Times article.