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.

**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
Friday Morning July 25th between 2:00am and 6:00am

Click to view an interactive map

Areas highlighted on the map are scheduled for treatment
Wednesday Evening July 23rd between 8:00pm and 12:00am

Click to view an interactive map

When	Area	Activity	Factor	Completed/ Cancelled	Zip	Product Used
7/25/2025 2am-6am	Tahoe Park South / Tallac Village - Stockton Blvd E to 69th St; 13th Ave to Lemon Hill Ave	Truck LV	Invasive Species		95820, 95824	Vectobac WDG
7/25/2025 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
7/23/2025 8pm-12am	West Yolo Rice ( J-Run)	ULV	High Trap Counts	Completed	95694, 95695	DeltaGard
7/23/2025 8pm-12am	North Winters Rice	ULV	Abundance	Completed	95695, 95616, 95694	DeltaGard
7/23/2025 8pm-12am	Natomas Rice - W Elverta Rd South to Elkhorn Blvd, Hwy 99 East to E. Levee Rd	ULV	High Trap Counts	Completed	95835, 95836, 95626, 95673	DeltaGard
7/23/2025 8pm-12am	El Macero Rice	ULV	Abundance	Completed	95618	DeltaGard
7/21/2025 8pm-12am	North Ridge Country Club and San Juan Park	ULV	West Nile Positive Pool	Completed	95628, 95610	DeltaGard
7/21/2025 8pm-12am	Norma Hamlin Park, Pecan Park, Almond Park, and Phoenix Park	ULV	West Nile Positive Pool	Completed	95662, 95628	DeltaGard
7/21/2025 8pm-12am	Gibson Ranch, Antelope Greens, and Cherry Creek Golf Course	ULV	West Nile Positive Pool	Completed	95626, 95843	DeltaGard
7/21/2025 8pm-12am	Brock Park, Lone Oak Park, Memorial Park, Antelope Community Park	ULV	West Nile Positive Pool	Completed	95843, 95660	DeltaGard
7/21/2025 8pm-12am	Areas of Twitchell Island and Brannan Island	ULV	West Nile Positive Pool	Completed	94571, 95641	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 July 23rd between 8:00pm and 12:00am

Click to view an interactive map