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Community Corner

Aerial Mosquito Control Planned In Oceanside: September 22 - 23

​San Diego County will conduct routine mosquito-fighting aerial larvicide​ on Oceanside area waterways. Final planned drop of 2021 season.

OCEANSIDE, CA — The County of San Diego Vector Control Program (VCP) will conduct mosquito larvicide applications to reduce mosquito breeding and decrease the risk of West Nile virus (WNV) transmission this week.

The Oceanside area will be included in the final planned routine aerial application of the 2021 season scheduled for September 22 - 23. The mosquito-fighting aerial larvicide drop will target nine Oceanside waterways.

Aerial Larvicide Applications Locations in Oceanside include approximately 270 acres in these waterway areas:

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  • Buena Vista Lagoon
  • Fireside Park
  • San Luis Rey River
  • Huula Dr.
  • Foss Lake
  • Libby Lake
  • Talone Lake
  • Guajome County Park
  • Antique Gas/Guajome Adobe

To better protect our communities and the environment, the Vector Control Program (VCP) applies mosquito larvicide via helicopter to mosquito breeding areas that cannot be treated by hand. These aerial applications occur every three to four weeks during the mosquito breeding season, generally April to October, or as needed.

The granular larvicides used by the Vector Control Program act specifically on mosquito larvae and will not harm people, pets, plants, or wildlife. The larvicide consists of granules containing Lysinibacillus (Bacillus) sphaericus, Bacillus thuringiensis israelensis, and/or Saccharopolyspora spinosa products. These naturally occurring bacteria target mosquito larvae and prevent them from developing into biting adults.

Find out what's happening in Oceanside-Camp Pendletonfor free with the latest updates from Patch.

2021 Aerial Larvicide Application Schedule

  • May 5 and 6, 2021
  • June 2 and 3, 2021
  • June 23 and 24, 2021
  • July 14 and 15, 2021
  • August 4 and 5, 2021
  • August 25 and 26, 2021
  • September 22 and 23, 2021
  • October 6 and 7, 2021 (if needed)

Please note, aerial larvicide application dates are subject to change depending on conditions.

Aerial Larvicide Fact Sheet
For more information on the aerial larvicide program, larvicides used, and WNV please visit SDFightTheBite.com.


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