Spraying Update

Below you will find adult mosquito treatments currently scheduled. More information and treatment archives are near the bottom of this page. Treatments are subject to change due to weather conditions. Typical AM times are 5:00am to 8:00am and PM times are 8:00pm to midnight. The following information is updated hourly from 7am to 3:30pm Monday through Friday.

  • Sign up for spray notifications to receive emails when ground spraying is scheduled in your zip code.
  • A daily updated recording is available by calling 800-429-1022, menu option 3.

Aerial Spraying over Residential Areas

  • No aerial spraying over residential areas is planned at this time.
  • Get text message updates when spraying 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.

Aerial Spraying over Agricultural Areas

When Area Activity Factor Completed/
Cancelled
Zip
8/18/2017
7pm-12am
AGRICULTURAL AREAS LOCATED SOUTH OF I 80 AERIAL ULV HIGH TRAP COUNTS COMPLETED 95618
8/18/2017
7pm-12am
AGRICULTURAL AREAS LOCATED NORTH OF ELVERTA RD AERIAL ULV HIGH TRAP COUNTS COMPLETED 95837, 95836
8/19/2017
7pm-12am
AGRICULTURAL AREAS LOCATED WEST OF KNIGHTS LANDING AERIAL ULV HIGH TRAP COUNTS COMPLETED 95645, 95695, 95776
8/19/2017
7pm-12am
AGRICULTURAL AREAS LOCATED NORTH OF DAVIS, SOUTH OF WOODLAND AERIAL ULV HIGH TRAP COUNTS COMPLETED 95695, 95776
8/20/2017
7pm-12am
AGRICULTURAL AREAS LOCATED IN NORTH YOLO COUNTY AERIAL ULV HIGH TRAP COUNTS COMPLETED 95937, 95645, 95698
8/21/2017
7pm-12am
AGRICULTURAL AREAS LOCATED WEST OF KNIGHTS LANDING AERIAL ULV HIGH TRAP COUNTS 95645, 95695, 95776
8/21/2017
7pm-12am
AGRICULTURAL AREAS LOCATED NORTH OF ELVERTA RD AERIAL ULV HIGH TRAP COUNTS 95837, 95836

View a map of the agricultural areas subject to aerial treatments.
List of all agricultural aerial treatments for 2013.
Ground Spraying

When Area Activity Factor Completed/
Cancelled
Zip
8/21/2017
7pm-12am
Natomas Rice Elverta Rd South to Elkhorn ULV WNV Positive Bird/Trap 95835, 95836, 95837, 95626, 95673
8/21/2017
7pm-12am
Hansen Ranch, E Levee Road and Canal ULV High Trap Counts 95834, 95835, 95838, 95673
8/21/2017
7pm-12am
Garden Hwy/Teal Bend ULV WNV Positive Bird/Trap 95837
8/21/2017
5am-8am
Momtoma Lane ULV Positive WNV mosquito pool Completed 95693
8/21/17
7pm-12am
West Yolo J rice Truck ULV High Trap Counts 95695
8/21/17
7pm-12am
Roosevelt Ranch Truck ULV High Trap Counts 95698
8/21/17
7pm-12am
Rd 10 Rice Truck ULV High Trap Counts 95698
8/21/17
7pm-12am
Klenhard Park Truck ULV WNV Positive Trap 95776
8/21/17
7pm-12am
Jack Slaven Park Truck ULV WNV Positive Trap 95776
8/21/17
7pm-12am
Dunnigan Truck ULV WNV Positive Trap 95645 95698
8/21/17
7pm-12am
Dunnigan Rice Truck ULV High Trap Counts 95645 95698
8/21/17
7pm-12am
Douglas Park Truck ULV WNV Positive Trap 95695

View a map of the areas subject to ground treatments.
List of all ground treatments for 2013.

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 significant risk to our community. In the event that 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 immature mosquitoes.

Labels for products used (PDF):

The Sacramento-Yolo Mosquito and Vector Control District (SYMVCD) will make every attempt to notify individuals who sign-up for the District’s notification list via e-mail. However, the District may not be able to notify the public if immediate applications are needed to protect public health and welfare from diseases such as West Nile virus, Western Equine Encephalomyelitis, St. Louis Encephalitis or malaria. The SYMVCD 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: