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Service Request

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Mosquito Prevention

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Board Agendas

Mosquito Questions? 

West Valley Mosquito and Vector Control
Get Ready for Summer!

Be vigilant about standing water around your home now - stop mosquitoes before they start!

Positive West Nile Virus Samples Found in Rancho Cucamonga

Surveillance traps collected the Week of September 27th - October 1st ,2021.

 Mosquitoes tested positive for WNv.

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Covid 19
COVID-19 Update


If you wish to visit the district for insect identification or to pick up mosquitofish, please call first to make an appointment. 


When arriving at the District, a facial covering is mandatory to enter the building. Call us at 909-635-0307 for appointments.

District services have been updated so that staff will start knocking on doors, leaving doorhangers, and providing service requests with the following conditions:


  1. Whenever dealing with the public, District staff must wear a facial covering.

  2. Staff must maintain social distancing while performing a service request. 

COVID-19 Update


Invasive Mosquitoes

Also known as Aedes mosquitoes, this species of mosquito behaves differently from our native mosquitoes. They prefer to breed in small sources like flower pots, pet dishes, yard drains, etc.


These mosquitoes are also aggressive day-time biters, so remember to wear repellent and dump out standing water! 

Have a Game Plan!

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Living in the West Valley - Series 1


Living in the West Valley - Series 2

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Living in the West Valley - Series 3



  • Inspection for mosquitoes
  • Habitat modification for vector reduction
  • Swimming pool inspection
  • Larvicide and pupacide applications
  • Pre-construction vector survey
  • Inspection for rodents around residence
  • Honey Bee Hive Removal in vegetation and non-structural areas (Any bees in or on homes, walls, and other structures require a private pest control company or beekeepers association) during non-peak mosquito breeding times.

The District's Vector Control Technicians respond to resident concerns when they call in or use our website to create a service request. Our technicians strive to respond within 48 hours to all requests.