An ingredient found in grapefruit and certain other plants has shown early promise in repelling the mosquitoes that transmit Zika and other viruses. This means that a good repellent against Zika-carrying mosquitoes could be found in the produce section of your grocery story.

The National Institute of Allergy and Infectious Disease has announced it will sponsor studies of the ingredient called nootkatone.

What makes this ingredient particularly intriguing is that it’s already used as a flavoring and fragrance, meaning it’s approved to eat and put on skin.

If proven effective, a repellent wouldn’t be available until at least next year.