The California Department of Food and Agriculture has implemented an 89-square-mile quarantine for the Oriental fruit fly in the Pasadena-San Marino area of Los Angeles County.
For a map of the quarantine, click here.
Crews will use the male anhilation technique to fight the pest.
It involves spraying a small glob of fly attractant mixed with a minute amount of pesticide on tree trunks, light poles and other similar surfaces, according to a news release.
Male flies are attracted to the material and die after consuming it.
The treatment will continue every two weeks for two life cycles beyond the last fly trap catch.