Two Oriental fruit flies have been trapped in the Laguna Beach area near Los Angeles.
The California Department of Food and Agriculture will begin a treatment program on about 7.5 square miles surrounding the sites where the pests were trapped, according to a news release.
The eradication program involves a male attractant mixed with a minute amount of pesticide.
Workers spray a small amount of the mixture on trees, poles and other similar structures about 8 to 10 feet from the ground.
Male fruit flies are attracted to the mixture and are killed after they contact it.
Oriental fruit flies can infest more than 230 different fruits and vegetables.
Damage occurs when females lay eggs in ripening fruit. Once the eggs hatch, the larvae feed on the flesh, rendering the product unmarketable.