Local mosquito ground spray treatments will continue

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Sacramento-Yolo Mosquito and Vector Control District field technicians will continue their outreach efforts to share information with the community, and to search for potential breeding sources and mosquito larvae.

“The infestation is very, very widespread all over town and we will continue with our treatments and surveillance,” said Luz Maria Robles, Public Information Officer for the District.

District field technicians are leaving important information on doors regarding the invasive mosquito.
Courtesy photo

An adult female Aedes aegypti mosquito was found in a trap placed near East and Main streets last week. The invasive container-breeding mosquito is an aggressive species that prefers to bite people during the day and has the potential to transmit serious diseases including Zika, dengue and chikungunya. The discovery in Winters two weeks ago was the first of its kind detected in Yolo County, ever.

The District is conducting door-to-door inspections looking for potential mosquito breeding sites, and talking to residents about preventive measures around their home. For residents who do not answer they are leaving pamphlets and informational door hangers to help spread knowledge about the invasive mosquitos.

Field techs are also conducting appropriate treatments as necessary and setting traps for areas that are being impacted by a heavy mosquito presence.

Preventative Steps
Winters residents are encouraged to do regular inspections in their yards and to take preventative actions.

The invasive mosquito species lays eggs in small sources of water around the yard. The eggs are laid to the side of containers along the water line. They are resistant to the water drying out and can survive for many months until new water covers them.

Residents are being asked to search for potential breeding sources that include: plant saucers, buckets, bird baths, rain barrels, tires, wheelbarrows, toys left outside and even small items that can hold water like a bottle cap.

The District recommends covering containers with fitted lids, removing miscellaneous containers not being used and removing old tires from yards. Other suggestions include:

  • Emptying bird baths and fountains every three days.
  • Re-directing sprinkles so they are not filling nearby containers, or moving containers so they are not filling with water.
  • Regularly cleaning out rain gutters and drains in the yard.
  • Not watering plants to the point that they are filled with water.
  • Keeping potential sources dry when not in use.

To prevent mosquito bites, the District recommends residents use an effective repellent containing DEET, picaridin, IR3535 or lemon and eucalyptus oils when outdoors.

DEET repellent wipes and informational brochures are available at the Winters City Hall and Winters Chamber of Commerce office locations.

Ground spraying treatments
Part of the District’s Integrated Pest Management program and Mosquito-Borne Disease Management Plan is to administer Low Volume and Ultra Low Volume treatments by using ground spraying equipment in and around areas where mosquito counts and virus activity have met treatment criteria.

The product applied by the District is designed to quickly reduce mosquito populations and to protect public health and welfare. All products are registered and evaluated by the California Environmental Protection Agency.

The District performs different types of treatments in efforts to control mosquito populations.

Robles said currently they are doing “larviciding” (truck mounted ground spraying) treatments in Winters neighborhoods.

Larviciding treatments work to target immature mosquito larvae and pupae, before they are given an opportunity to develop into an adult mosquito. This type of spraying treatment usually happens in the early morning hours between 2-6 a.m.

Robles said the other type of ground spraying treatment being done in Winters targets adult mosquitoes. This type of spraying treatment usually happens around dusk from 7-10 p.m.

The option to sign up for text urban aerial spraying notifications on the District’s website only applies to West Nile Virus spraying treatments. Robles said that while agriculture spraying treatments are routine, the urban aerial spraying treatments are only done on an “as needed” basis. She said they have not done an urban aerial spray treatment so far this season, and did not do one last year either.

Residents can sign up to receive email notifications for truck mounted “ground spraying” treatments in their area online at https://www.fightthebite.net/services/spray-notifications/.

When signing up, residents are able to specify which types of spray treatments they would like notifications on.

For a complete list of scheduled treatment locations by zip code visit https://www.fightthebite.net/media/spraying-updates/.

For additional treatment questions and answers please visit Spraying Frequently Asked Questions at https://www.fightthebite.net/faqs/spraying/.

The District is requesting Yolo County residents to help identify mosquito populations and to report instances of being bitten.

Residents experiencing mosquito bites during the day should report them immediately by calling 1-800-429-1022 or requesting service at www.FIGHTtheBITE.net.

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