Large Area Mosquito Treatment History
Below is the history of large area treatments for 2026
Ultra Low Volume (ULV) Treatment
| Application Date | Time | Location/City | Treatment | Reason | Status |
|---|---|---|---|---|---|
| 3/18/2026 - 3/20/2026 | 7:00 p.m. - 8:30 p.m. | Canyon Park | AquaDuet | Mosquito abundance | Complete |
| 3/18/2026 - 3/20/2026 | 8:30 p.m. - 9:30 p.m. | Randolph Preserve | AquaDuet | Mosquito abundance | Complete |
Drone Treatment
| Application Date | Time | Location | Treatment | Reason | Status |
|---|---|---|---|---|---|
| 1/28/2026 | 8:00 a.m. - 10:00 a.m. | Fairview Park Vernal Pools, Costa Mesa | VectoBac GR | Mosquito abundance | Complete |
| 2/26/2026 | 8 a.m. - 1 p.m. | Randall Preserve, Costa Mesa/Newport Beach | VectoBac GS | Mosquito abundance | Complete |
| 3/2/2026 | 8 a.m. - 1 p.m. | Randall Preserve, Costa Mesa/Newport Beach | VectoBac GS | Mosquito abundance | Complete |
| 3/10/2026 | 8:00 a.m. - 11:00 a.m. | Shipley's Nature Center | VectoBac GS | Mosquito abundance | Complete |
Ground-Based Wide Area Larvicide (WALS) Treatment
| Application Date | Time | Location | Product | Reasons | Status |
|---|---|---|---|---|---|
| 1/14/2026 | 9:00 a.m. - 12:30 p.m. | Bolsa Chica Wetlands, Huntington Beach | VectoBac WDG | Mosquito abundance | Complete |
| 2/6/2026 | 8:30 a.m. - 12:30 p.m. | Bolsa Chica Wetlands, Huntington Beach | VectoBac WDG | Mosquito abundance | Complete |
| 3/12/2026 | 7:00 a.m. - 11:00 a.m. | Bolsa Chica Ecological Reserve | Vectobac WDG | Mosquito abundance | Complete |
| 3/12/2026 | 7:00 a.m. - 11:00 a.m. | Bolsa Chica Ecological Reserve | Vectobac WDG | Mosquito abundance | Complete |
