SPRAYING UPDATES
SPRAYING UPDATES
The Sacramento-Yolo Mosquito and Vector Control District’s primary goal is to protect public health and welfare by managing mosquito populations so they do not present a risk to our community. If mosquito populations pose a significant public nuisance or when emergency control measures are needed to rapidly disrupt or terminate the transmission of disease to humans, the District will respond by continuing to implement its Mosquito-borne Disease Management Plan.
As part of this plan, the District may administer Ultra Low Volume (ULV) treatments by using backpack foggers, hand sprayers, truck-mounted foggers or aircraft, in and around areas where virus activity has been detected. Each fogging unit is calibrated to ensure the correct amount of product is applied for each treatment area. All products are registered with the California Environmental Protection Agency (EPA) and are applied by trained and state-certified technicians. Adulticides are chemicals that quickly reduce adult mosquito populations. Larvicides target mosquitoes developing in the water.
The District strives to keep the public updated and informed on all mosquito control treatments to protect public health and welfare from diseases such as West Nile virus among others. Residents are encouraged to sign up to receive email notifications for urban, agricultural or ground treatments occurring in their zip code.
Sign up for spray notifications to receive emails when spraying is scheduled in your zip code.
**Any scheduled treatment may be postponed, cancelled or rescheduled due to unfavorable weather conditions and/or other reasons**
Urban Aerial Spraying
No urban aerial spraying is scheduled at this time.
Ground Spraying
As a response to increased WNV or elevated mosquito activity, the District may conduct localized ground treatments with trucks or backpacks throughout neighborhoods, parks, creeks and other open areas. Scheduled and recent ground treatments are listed below.
Click here for a list of all ground treatments to date this year.
Areas highlighted on the map are scheduled for treatment
Thursday Morning September 18th between 2:00am and 6:00am
Click to view an interactive map
Blue Boxes contain areas too small to show in detail. Click map to open and zoom in.
| When | Area | Activity | Factor | Completed/ Cancelled | Zip | Product Used |
|---|---|---|---|---|---|---|
| 9/18/2025 2am-6am | Northgate Area - EB 80 south to Garden HWY, Ninos Pkwy east to E Levee Rd | Truck LV | Invasive Species | 95834, 95833 | Vectobac WDG | |
| 9/15/2025 7pm-11pm | West Yolo Rice I505 south to Rd 95 and Rd 27 North to Rd 24 | ULV | High Trap Counts | Completed | 95694, 95695 | DeltaGard |
| 9/15/2025 7pm-11pm | Town of Madison | ULV | West Nile Positive Pool | Completed | 95653 | DeltaGard |
| 9/15/2025 7pm-11pm | North of Winters Rice | ULV | Abundance | Cancelled | 95695, 95616, 95694 | DeltaGard |
| 9/15/2025 7pm-11pm | Norma Hamlin Park, Pecan Park, Almond Park, and Phoenix Park | ULV | West Nile Positive Pool | Completed | 95662, 95628 | DeltaGard |
| 9/15/2025 7pm-11pm | Hwy 160 East to Bruceville Rd, Hood Franklin Rd South to Lambert Rd | ULV | West Nile Positive Pool | Completed | 95757, 95758, 95615, 95639 | DeltaGard |
| 9/15/2025 7pm-11pm | El Macero Rice | ULV | WNV+ Pool | Completed | 95618 | DeltaGard |
| 9/15/2025 7pm-11pm | Dillard Rd and Walmort Rd East to the Folsom South Canal, Dillard Rd and Colony Rd South to Woods Rd | ULV | West Nile Positive Pool | Completed | 95693 | DeltaGard |
| 9/15/2025 7pm-11pm | Areas of Twitchell Island and Brannan Island | ULV | High Trap Counts | Completed | 94571, 95641 | DeltaGard |
| 9/15/2025 7pm-11pm | Anatolia Bike Trail | ULV | West Nile Positive Pool | Completed | 95742 | DeltaGard |
| 9/15/2025 7pm-11pm | American River Bike Trail / Jedediah Smith Memorial Trail: Watt Ave to Hazel Ave | ULV | West Nile Positive Pool | Completed | 95864, 95826, 95608, 95827, 95670 | DeltaGard |
| 9/15/2025 7pm-11pm | Ag area Northeast Davis | ULV | WNV+ Pool | Completed | 95776, 95616, 95618 | DeltaGard |
Routine Aerial Spraying to Agricultural Areas
The District conducts routine aerial applications to a variety of agricultural sources that may be producing mosquitoes. Agricultural areas that may be treated include areas such as rice fields and pastures.
IMPORTANT NOTE: At times when agricultural treatments are being conducted close to residential areas, the plane may fly directly above homes. Material is not being deposited below, rather it is targeting a specific location. For additional information relating to this topic, see our Spraying Frequently Asked Questions page. Typical agricultural aerial spraying times are between 7:00pm and midnight. Scheduled and recent agricultural aerial treatments are listed below.
Click here for a list of all agricultural aerial treatments to date this year.
Areas highlighted on the map are scheduled for treatment
Wednesday Evening September 17th between 7:00pm and 11:00pm
Click to view an interactive map
Blue Boxes contain areas too small to show in detail. Click map to open and zoom in.
| When | Area | Activity | Factor | Completed/ Cancelled | Zip | Product Used |
|---|---|---|---|---|---|---|
| 9/17/2025 7pm-11pm | AGRICULTURAL AREAS LOCATED SOUTH OF I80 | AERIAL ULV | WNV POSITIVE SAMPLE | 95618 | Dibrom | |
| 9/16/2025 7pm-11pm | AGRICULTURAL AREAS LOCATED NORTH OF NATOMAS | AERIAL ULV | HIGH TRAP COUNTS | Completed | 95837, 95836, 95626, 95835,95673 | Evergreen 5-25 |
WHAT WE USE
Below you will find links to the labels for products we use:
Fyfanon EW
Evergreen 5-25 Air
Evergreen 5-25 Ground
OneGuard
Aquahalt
Dibrom
Pyronyl Crop Spray
Pyronyl 525
Suspend
Trumpet EC
Merus 2.0
Mavrik
Merus 3.0
DeltAGard Insecticide
Vectobac WDG
Lambda 9 7 CS
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