From Times of San Diego
April 20, 2023
San Diego County will conduct its first larvicide drop of the year on up to 51 local waterways as part of a campaign to combat diseases spread by mosquitoes such as West Nile virus, it was announced Wednesday.
Aerial larvicide drops are carried out once a month between April and October each year, covering around 1,300 acres of mosquito breeding areas.
The routine helicopter drops will be conducted next Wednesday, and Thursday if necessary, according to a news release from the county.
County officials say the larvicide does not hurt people or pets.