Mosquito Management Program

Mosquito Trap Data Reports

Vector Disease Control International (VDCI) operates 10 mosquito traps in Windsor, which are placed weekly throughout the city. Weather permitting, traps are set on Wednesday nights, giving a good indication of the relative number of mosquitoes in an area, as well as what species are occurring there.

Trap thresholds of 100 or more mosquitoes will trigger a truck fogging application in the area of town around the trap site. This system provides data-based decisions for mosquito spray areas.  

Helpful Links

Please see the following links for information about Vector Disease Control International:
  • Notifications/Shut Off Requests
    Sign up to receive notifications of when your area will be sprayed, as well as request for the VDCI team to shut-off their spray machine when passing your house.

Contact Us

  1. Public Works
    922 N 15th Street
    WindsorCO 80550

    Ph: 970-674-5400


    Monday - Friday
    7:00am - 3:30pm

    For after-hour utility issues (water line leaks, water main breaks) call 970-674-5415. To report after-hours road safety concerns call 970-674-5411.
AdultCx tarsalis_PHOTOCREDIT_CDC.jpg
Photo credit: Center for Disease Control (CDC)

Mosquito Species Information

Of the approximately 50 species of mosquitoes recorded in Colorado, a dozen have been found in Windsor.

In general, mosquitoes in the genus Aedes (shown in blue on the pie diagrams - in the Trap Data Reports above) are mainly nuisance biters, although one of our most common species, Aedes vexans, is known to be a vector of Dog Heartworm. 

Species in the genus Culex (shown in red on the pie diagrams - in the Trap Data Reports above) are the main vectors of the West Nile Virus, as well as Western Equine Encephalitis and St. Louis Encephalitis. In Colorado, our main West Nile Virus vector is Culex tarsalis. 

For more information about mosquito biology, visit the Vector Disease Control International website.

Fight the Bite 

This is a list of


recommendations from Fight the Bite Colorado. For more prevention tips, disease symptoms, and answers to questions, visit the Fight the Bite website.
  • DRAIN standing water around your house weekly since that is where mosquitoes lay eggs, including tires, cans, flower pots, clogged rain gutters, rain barrels, toys and puddles.
  • DUSK AND DAWN are when mosquitoes that carry the virus are most active, so limit outdoor activities or take precautions to prevent mosquito bites.
  • DEET is an effective ingredient to look for in insect repellents. Always follow label instructions carefully.
  • DRESS in long sleeves and pants during dawn and dusk or in areas where mosquitoes are active.

Helpful Documents