Spraying Update

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 and 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’s output 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**

  • Sign up for spray notifications to receive emails when spraying is scheduled in your zip code.
  • Get text message updates when urban aerial spraying is scheduled, begins and ends by texting FOLLOW SYMVCDSpray to 40404 to Fast-follow our Twitter account @SYMVCDSpray that only publishes aerial spraying notifications. Text STOP to 40404 to stop receiving updates.
  • A daily updated recording is available by calling 800-429-1022, menu option 3.

Urban Aerial Spraying

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.

  • Morning treatments may occur between 5:00 am to 8:00 am and evening treatments from 8:00 pm to midnight.

  • View an interactive map of the agricultural areas subject to aerial treatments.

Treatments scheduled in the past three days:

7/23/2014Ag Areas North of Davis and I-80AERIAL ULVWNV POS MOSQ TRAPSCancelled95776, 95618, 95695PM

List of all agricultural aerial treatments for 2014.


Ground Spraying

  • As a response to increased WNV activity, the District may conduct localized ground treatments with trucks or backpacks throughout neighborhoods, parks, creeks and other open areas.

  • View an interactive map of the areas subject to ground treatments.

Scheduled in the past three days:

IntermittentlyRural Agriculture & Rice Growing RegionsTruck ULVAdult Threshold ExceededOngoingAM/PM
7/23/2014Ancil Hoffman Park, Del Campo ParkTruck ULVWNV POS MOSQ POOLComplete95608PM
7/23/2014El Macero Country ClubBackpack ULVWNV POS POOLCompleted95618PM
7/23/2014Isleton, Andrus Island & GenerationsTruck ULVWNV POS MOSQ POOLCompleted95641PM
7/23/2014Knights LandingTRUCK ULVWNV POSITIVE MOSQUITO POOLCompleted95645PM
7/23/2014Laguna Creek and Bond RdBackpackWNV POS MOSQ POOLComplete95624PM
7/23/2014Laguna South Park, Laguna CreekTruck ULVWNV POS MOSQ POOLComplete95758, 95823PM
7/23/2014Miller ParkBackpackWNV POS MOSQ POOLComplete95628PM
7/23/2014Pioneer ParkBackpack ULVWNV POS POOLCompleted95618PM
7/23/2014Putah Creek So. of Garrod Dr.Truck ULVWNV POS POOLCompleted95616PM
7/23/2014Sheldon Rd, Bader Rd, Justamere LnBackpackWNV POS MOSQ POOLComplete95624PM
7/23/2014So. & Ea. of El MaceroTruck ULVWNV POS POOLCompleted95618PM
7/23/2014Stone Lakes and Wastewater property to Franklin BlvdBackpackWNV POS MOSQ POOLPartial Complete95758, 95823PM

List of all ground treatments conducted to date in 2014.

Labels for products used (PDF):

The District will make every attempt to notify individuals who sign-up for our spray notification list via e-mail. The District may also cancel a scheduled operation due to weather and/or other reasons.

For additional product information, please contact the District at 1-800-429-1022 from 7:00 a.m. to 3:30 p.m. Monday - Friday.

Historical information for previous aerial treatments over residential areas: Historical information for previous ground treatments: