I moved to Camarillo in 1994/95 and they were spraying for medfly every night. I remember one night I left my window open and freaked out because I woke up to the helicopters going overhead. They had found one fly in one of the orchards and sprayed for a few months.
Those low-flying helicopters thundered and shook the whole house. People were outraged by it, but they went ahead and eradicated the MedFly. I don’t recall any reports of short-term or long-term health effects from the malathion spraying.
We had bug traps on our property for a while. We left Palo Alto in ‘83 and moved nearby. We had a bug trap on our property in summer ‘24, too. They are always monitoring for invasive pests.