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Environmental Health Home Page
 

Calaveras County Environmental Management Agency
Environmental Health Mosquito Control
  & Vector Control
               

Mosquito Control

Controlling mosquitoes
starts with finding where mosquitoes live. Many times this may be in and around your house, in a field, or near parks and schools.

Data Collection for GIS mapping
County Technician doing Site Survey    
 

Weekly trapping and monitoring of mosquito populations and West Nile virus will be performed during the mosquito breeding season county wide, which typically lasts until December.

                   Mosquito Trap
 CO2 Baited EVS Mosquito Trap

     Gravid Trap
Trap   


Weekly trapping and monitoring of adult mosquito populations and West Nile virus will be performed during the mosquito breeding season in your neighborhoods county wide. A CO2 Baited EVS trap, or a Gravid trap will be placed in your neighborhood to count the number and species of adult mosquitoes.

After collecting the traps and counting the mosquitoes, we survey all surrounding areas in search of the breeding location. When mosquito larvae are found, they are treated on the spot, and monitored for the remainder of the season.


 A Utility vehicle is used on dry grassy areas, as well as difficult terrain.
When mosquito larvae are found one of three things may take place:

Mosquito Sample1. Water source is treated with chemical to kill mosquito larve

2. Mosquito fish are either deposited, or targeted for placement

3. Water source is drained per owner's approval


    mosquito fish



    watering trough


    Fogging Truck


    Truck mounted Fogging Machine


    When adult mosquito numbers warrant, adulticiding in the form of Truck Mounted Fogging will occur. This usually is the result of high numbers of Culex tarsalis mosquitoes, or a recent WNV positive sample in the area.

    Every attempt will be made to find the breeding source after the adult population has been reduced.

    Please check the web site often for current populations and scheduled fogging.

    Calaveras County Environmental Management Agency
    Brian Moss, Director

    Phone: (209) 754-6399
    Fax: (209) 754-6722

    E-Mail: envhealth@co.calaveras.ca.us

    Mosquito/Vector control specific inquiries:
    Phone: (209) 754-6383
    E-Mail: mosquito@co.calaveras.ca.us

      
    Calaveras County Government Center
    Environmental Management Agency
    891 Mountain Ranch Road
    San Andreas, CA 95249


    Hours of Operation: 8:00a.m - 5:00p.m.
    Monday through Friday (except holidays)
    Closed from 12:00 p.m. - 1:00 p.m.

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    Updated: Wednesday, May 28, 2008
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    The Mission of Calaveras County Government is to provide service, infrastructure and leadership necessary to advance a safe community, maintain a high quality of life, and to protect personal liberties for all of its citizens.