Aerial Mosquito Larvicide Applications
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 Bacillus thuringiensis israelensis, Lysinibacillus (Bacillus) sphaericus, and/or Saccharopolyspora spinosa products. These naturally occurring bacteria target mosquito larvae and prevent them from developing into biting adults.
Larvicide information
- May 5 and 6, 2021
Please note, aerial larvicide application dates are subject to change depending on mosquito trap counts. If counts are high, larvicide will be applied every three weeks. If counts are moderate, larvicide will be applied every four weeks. If counts are low, larvicide will not be applied.
If you would like to sign up to receive e-mail announcements of scheduled aerial applications, please click on the link: E-Gov Delivery Notice Subscription and subscribe to Aerial Mosquito Larvicides Application, Countywide under Environmental Health.
Aerial Larvicide Application Locations
Name of Site | City | Acres |
Kit Carson Park | Escondido | 10.5 |
Lake Hodges | Escondido | 20 |
Rancho Bernardo Inn Golf Course | Rancho Bernardo | 5.3 |
Rancho Bernardo Lakes, Salviatia | Rancho Bernardo | 7 |
Rancho Bernardo Lakes, Bel Etage | Rancho Bernardo | 7 |
Rainsford's Pond/Old Course Rd | San Diego/4S Ranch | 5 |
The Landing | Rancho Bernardo | 2 |
Goldentop Road | Rancho Santa Fe | 6 |
San Dieguito River – Bing Crosby | Rancho Santa Fe | 4 |
Watson Ranch | San Diego | 6 |
Lusardi Pond | Rancho Santa Fe | 5.5 |
Sabre Springs | San Diego | 16 |
Lindo Lake | Lakeside | 6.5 |
Cactus County Park | Lakeside | 12 |
San Diego River – Town Center | Santee | 5 |
Carlton Oaks | Santee | 4 |
Willowbrook | Lakeside | 65 |
Sycamore Creek | Santee | 20 |
Chubb Lane | Santee | 3 |
Lake Kumeyaay | San Diego | 23 |
San Diego River – near Home Depot | San Diego | 7.5 |
San Diego River – Qualcomm Way | San Diego | 7 |
Salt Creek | Chula Vista / San Diego | 4 |
Otay River, Broadway / Beyer | Chula Vista / San Diego | 20 |
Chula Vista – Hollister Street | Chula Vista / San Diego | 43.5 |
Otay River, West Hwy 805 | Chula Vista / San Diego | 20 |
Otay River, East Hwy 805 | Chula Vista / San Diego | 20 |
Dairy Mart Road | San Diego | 37 |
Swap Meet | San Diego | 8.75 |
Tijuana River, Hollister | San Diego | 43.5 |
Carmel Creek | San Diego | 17 |
Peñasquitos Lagoon | San Diego | 70 |
San Diego Polo Grounds | San Diego | 66.2 |
Derby Downs | San Diego | 25.5 |
San Elijo Lagoon, East and West | Encinitas / Solana Beach | 80 |
Las Olas, East and West | Carlsbad | 30 |
Laguna Riviera City Park | Carlsbad | 27 |
Evan's Point | Carlsbad | 6.5 |
Buena Vista Lagoon | Oceanside / Carlsbad | 120 |
Fireside Park | Oceanside | 5.5 |
San Luis Rey River | Oceanside | 30 |
Huula Dr. | Oceanside | 14.7 |
Foss Lake | Oceanside | 27 |
Libby Lake | Oceanside | 1.5 |
Talone Lake | Oceanside | 8 |
Guajome County Park | Oceanside | 40 |
Antique Gas/Guajome Adobe | Oceanside | 9 |
Lake Rancho Viejo & San Luis Rey River | Fallbrook | 13.5 |
Total: 48 locations & approx. 1035.45 acres