Large Area Mosquito Treatment History
Below is the history of large area treatments for 2025
Ultra Low Volume (ULV) Treatment
| Application Date | Time | Location/City | Treatment | Reason | Status |
|---|---|---|---|---|---|
| 11/10/2025 - 11/11/2025 | 3:00 a.m. to 5:00 a.m. | Santa Ana | DeltaGard | Mosquito abundance | Complete |
| 10/28/2025 - 10/30/2025 | Midnight to 5:00 a.m. | Anaheim, Buena Park, Fullerton | DeltaGard | Mosquito abundance | Complete |
| 10/21/2025 - 10/23/2025 | Midnight to 5:00 a.m. | Anaheim | DeltaGard | Mosquito abundance | Complete |
| 10/15/2025 - 10/17/2025 | Midnight to 5:00 a.m. | Anaheim, Garden Grove and Stanton | AquaDuet DeltaGard | Mosquito abundance | Complete |
| 10/8/2025 - 10/9/2025; 10/13/2025 | Midnight to 5:00 a.m. | Garden Grove and Anaheim | AquaDuet | Mosquito abundance | Complete |
| 10/2/2025 - 10/3/2025; 10/6/2025 | Midnight to 5:00 a.m. | Anaheim | AquaDuet | Mosquito abundance | Complete |
| 9/29/2025 - 10/1/2025 | 3:00 a.m. to 5:00 a.m. | Fountain Valley | DeltaGard | Mosquito abundance | Complete |
| 9/23/2025 - 9/25/2025 | Midnight to 5:00 a.m. | Anaheim / Garden Grove / Orange / Santa Ana | AquaDuet | Mosquito abundance | Complete |
| 9/10/2025 - 9/12/2025 | Midnight to 5:00 a.m. | Santa Ana | DeltaGard | Mosquito abundance | Complete |
| 8/27/2025 - 8/29/2025 | Midnight to 5:00 a.m. | Fullterton | DeltaGard | Mosquito abundance | Complete |
| 8/19/2025 - 8/21/2025 | Midnight to 5:00 a.m. | Orange / Santa Ana | DeltaGard | Mosquito abundance | Complete |
| 8/18/2025 - 8/19/2025 | Midnight to 5:00 a.m. | Anaheim / Garden Grove / Stanton | DeltaGard | Mosquito abundance | Complete |
| 8/13/2025 - 8/15/2025 | Midnight to 5:00 a.m. | Anaheim, Garden Grove | DeltaGard | Mosquito abundance | Complete |
| 8/13/2025 - 8/15/2025 | Midnight to 5:00 a.m. | Fullerton | DeltaGard | Mosquito abundance | Complete |
| 8/6/2025-8/8/2025 | Midnight to 5:00 a.m. | Anaheim / Garden Grove / Stanton | DeltaGard | Mosquito abundance | Complete |
| 7/30/2025 - 8/1/2025 | Midnight to 5:00 a.m. | Anaheim / Garden Grove | DeltaGard | Mosquito abundance | Complete |
Drone Treatment
| Application Date | Time | Location | Treatment | Reason | Status |
|---|---|---|---|---|---|
| 10/31/2025 | 8:30 a.m. - 10:00 a.m. | Harriett M. Wieder Regional Park, Huntington Beach | VectoBac GR | Mosquito abundance | Complete |
| 10/31/2025 | 10:00 a.m. - 12:00 p.m. | Shipley Nature Center, Huntington Beach | VectoBac GR | Mosquito abundance | Complete |
| 10/31/2025 | 10:00 a.m. - Noon | Shipley Nature Center, Huntington Beach | VectoBac GR | Mosquito abundance | Complete |
| 10/23/2025 | 9:00 a.m. - 10:30 a.m. | Shipley Nature Center, Huntington Beach | VectoBac GR | Mosquito abundance | Complete |
| 8/20/2025 | 9:00 a.m. - 1:00 p.m. | Bolsa Chica Wetlands, Huntington Beach | VectoPrime FG | Mosquito abundance | Complete |
| 8/7/2025 | 8:30 a.m. - 10:00 a.m. | Shipley Nature Center, Huntington Beach | VectoBac GS | Mosquito abundance | Complete |
| 8/7/2025 | 10:00 a.m. - 11:30 a.m. | Bartlett Park, Huntington Beach | VectoBac GS | Mosquito abundance | Complete |
| 7/24/2025 | 8:30 a.m. - 1:00 p.m. | UCI Marsh, Irvine | VectoBac GS, VectoBac GR | Mosquito abundance | Complete |
| 7/16/2025 | 8:30 a.m. - 1:00 p.m. | UCI Marsh, Irvine | VectoBac GS, VectoBac GR | Mosquito abundance | Complete |
| 6/11/2025 - 6/12/2025 | 8:00 p.m. - 10:00 p.m. | UCI Marsh, Irvine | AquaDuet | Mosquito abundance | Complete |
| 6/10/2025 | 9:30 a.m. - 11:30 a.m. | UCI Marsh, Irvine | VectoBac WDG | Mosquito abundance | Complete |
| 6/03/2025 | 9:00 a.m. - 10:00 a.m. | Shipley Nature Center, Huntington Beach | VectoBac GS | Mosquito abundance | Complete |
| 6/03/2025 | 10:00 a.m. - 11:30 a.m. | Newland Marsh, Huntington Beach | VectoBac GS | Mosquito abundance | Complete |
| 5/29/25 | 10:30 a.m. - 2:00 p.m. | UCI Marsh, Irvine | VectoBac GS | Mosquito abundance | Complete |
| 5/22/25 | 8:30 a.m. - 10:00 a.m. | Shipley Nature Center, Huntington Beach | VectoBac GS | Mosquito abundance | Complete |
| 5/22/25 | 10:00 a.m. - 12:00 p.m. | Harriett M. Wieder Regional Park/Bolsa Chica Wetlands, Huntington Beach | VectoBac GS | Mosquito abundance | Complete |
| 5/22/25 | 12:00 a.m. - 1:00 p.m. | Newland Marsh, Huntington Beach | VectoBac GS | Mosquito abundance | Complete |
| 4/8/25 | 10:00 a.m. - 12:00 p.m. | Bolsa Chica North, Huntington Beach | VectoBac GS | Mosquito Abundance | Complete |
| 4/8/25 | 12:00 p.m. - 2:00 p.m. | Shipley Nature Center, Huntington Beach | VectoBac GS | Mosquito Abundance | Complete |
| 4/8/25 | 12:00 p.m. - 2:00 p.m. | Shipley Nature Center, Huntington Beach | VectoBac GS | Mosquito Abundance | Complete |
| 1/16/25 | 8:00 a.m. - 2:00 p.m. | Bartlett Park, Newland Marsh, Huntington Beach | VectoBac GS | Mosquito abundance | Complete |
Ground-Based Wide Area Larvicide (WALS) Treatment
| Application Date | Time | Location | Product | Reasons | Status |
|---|---|---|---|---|---|
| 7/8/2025-7/10/2025 | 8:00 p.m. - 9:00 p.m | UCI Marsh, Irvine | AquaDuet | Mosquito abundance | Complete |
| 7/3/2025 | 9:30 a.m. - 11:30 a.m. | UCI Marsh, Irvine | VectoBac WDG | Mosquito abundance | Complete |
| 7/2/2025 - 7/3/2025 | 8:00 p.m. - 10:00 p.m. | UCI Marsh, Irvine | AquaDuet | Mosquito abundance | Complete |
