"Although malaria was eradicated from the United States in the early 1950s, it had once been a prevalent disease, especially prior to the 1880s. Through-out the nineteenth century, malaria affected most populated regions in the United States, significantly undermining the health of the population and the U.S. economy. Above all, malaria was one of the country’s leading causes of death. According to the U.S. Census Bureau, 45.7 out of every 1,000 deaths resulted from malarial fevers in 1850."
-- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2600412/
It was (and is) controlled by draining swamps and getting rid of standing water, the use of insecticides and window screens. If malaria can be controlled today in Florida, I think most of the rest of the country doesn't need to worry about mosquito death pills for quite a while.
Mosquito angle isn’t one I’ve heard before.