State agricultural officials have begun the second of four treatments in the north-central portion of the San Fernando Valley to eradicate Los Angeles County's first Oriental fruit fly infestation of the season.
The county uses a "male annihilation treatment" to combat the flies, said Bob Donley, deputy director of the Environmental Protection Bureau of the county Agricultural Commissioner's Department. The spraying is done from trucks.
Donley said a half-dollar-size spot, or "base station," is sprayed onto utility poles and tree trunks 8 feet above the ground. The spot contains a combination of methyl eugenol--which mimics the scent of the female Oriental fruit fly--and a pesticide that then kills the duped males.
The area being treated is approximately 10 square miles, bordered by Glenoaks Boulevard, La Tuna Canyon Road and Tuxford Street on the north, Laurel Canyon Boulevard on the west, Victory Boulevard on the south and Buena Vista Street on the east.