Rich neighborhood. In !SoCal's #SGV, they sprayed malathion-laced bait. I remember walking home from the mall after work as helicopters sprayed from overhead.
A younger brother worked at a different, more distant mall. He used to catch a bus from his mall to mine, and we'd walk home together. Later on, I saw people wearing t-shirts with the name of one of the affected communities and "medfly" with a drawing of a fly.
At the time, some were worried about the effects of the pesticide on humans, pets, and on vehicle paint. But 40+ years later, I am unaware of any effects that could be blamed on malathion.