Mosquito Control Program
Mosquito Control Program
West Nile Virus and Mosquito Management
The City of Boulder West Nile Virus Mosquito Management Plan (WNV MMP) was adopted by City Council in March 2006. The main objective of the WNV MMP is to reduce the risk of human West Nile Virus infection while minimizing environmental impacts. There are many species of mosquitoes in Boulder, but only three - Culex tarsalis, Culex pipiens and Culex erythrothorax - can transmit or vector West Nile Virus.
Sixteen adult mosquito traps are placed around the city and monitored weekly from late May through mid-September to determine the numbers of Culex mosquitoes. In addition, community education is essential to preventing the disease and reducing the numbers of the disease-carrying mosquitoes.
What you can do:
For the latest information on human cases of West Nile Virus in Colorado, please refer to Colorado Disease Control and Environmental Epidemiology Division.
Attacking the Source - Killing the Larvae: The city monitors potential mosquito breeding sites city-wide for vector mosquito larvae throughout the entire WNV season (May through September). Whenever Culex larvae are found, the site is treated with a biological insecticide, Bacillus thuringiensis israeliensis (Bti) to kill them. The Bti product is made from a naturally-occurring bacterium and has the least impacts to the environment. It is not toxic to fish or animals, but does kill some other aquatic insects, such as midges and black flies. Bti is very effective at killing mosquito larvae and kills nearly all of them in the treated area. Targeting larvae for treatment is a very effective method of mosquito control.
Please keep in mind that large-scale spraying has never been necessary before in Boulder's history. If spraying is deemed to be necessary (worst-case scenario) it will be done twice, three nights apart. Residents will be notified 48 hours in advance by 911 call back, ads in the newspapers, on the city's website (www.bouldercolorado.gov) and on Municipal Channel 8. Residents can opt out of spraying by calling the city's WNV Hotline at 303-441-3400, Option 4 and leaving their name, address and phone number.
Nuisance Mosquito Management
The City of Boulder treats limited sites to reduce the number of nuisance mosquitoes around several popular recreational areas and the Greenbelt Meadows and San Lazaro neighborhoods. One goal of this program, a cooperative effort between the city and Boulder County, is to make outdoor recreation more comfortable by reducing adult mosquito populations.
This is achieved by applying a non-toxic mosquito larvicide (Bti) to Sombrero Marsh, Burke II and the Kentucky Property, in addition to wetland areas within Flatirons Golf Course, Boulder Reservoir, Stazio Ball Fields, East Boulder Community Park, Pleasantview Soccer Fields, Valmont City Park and Christensen Park.
The Parks and Recreation Department will continue to employ other controls, including mosquito magnets and mowing at Stazio Ball Fields and Flatirons Golf Course, to further improve player comfort at these sites.
Additional Resources and Information
Last Updated on Monday, 06 May 2013 13:22