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  City of Fort Collins Mosquito Control Program

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The City of Fort Collins Mosquito Management Program can provide services to residents regarding:

  • Information about mosquito biology and source reduction of mosquito habitats
  • Information on program components, operations, and monitoring efforts within the city
  • Seasonal West Nile Virus activity
  • Personal protection options for mosquito annoyances and West Nile Virus risk
  • Respond to reports and concerns of mosquitoes and possible larval mosquito habitats
  • Perform larvicide applications to control mosquito larvae at no cost to the property owner
  • Stock residential ponds with fat head minnows for biological control

In 2014, The City of Fort Collin’s Mosquito Management Program completed its 11th year of cost effective Integrated Mosquito Management operations with Colorado Mosquito Control (CMC) as its contractor. Mosquitoes are dynamic insects which are capable of rapid populations increases dependent on habitat, water level, rainfall events, and temperature patterns.  The experience and knowledge of CMC and its’ employees of the local landscape, river drainage, and irrigation patterns, enables an overall reduction of mosquitoes.  The biorational management operations and data driven response to spikes in mosquito abundance are aimed at reducing the risk and annoyances associated with mosquitoes.  If left unmanaged residents residing throughout large sections of the city would be burdened by mosquitoes, thereby resulting in a decreased quality of life and reduced ability to enjoy outdoor activities.

Colorado Mosquito Control has designed, implemented, pioneered, refined and pushed to new technological levels, a comprehensive mosquito control program based on the sound scientific principles of IPM and the environmental goals of the City of Fort Collins.  In the years since the City of Fort Collins Mosquito Management Program’s inception and continuation of CMC as the program contractor, the Mosquito Management Program, under the operation of CMC, has developed into one of the foremost environmentally sensitive and technologically advanced Integrated Mosquito Management Programs in the United States.  Additionally, CMC has fostered the cooperative efforts for mosquito control and epizootic response management between Larimer County Department of Health and Environment, the City of Loveland, surrounding city municipalities, the Centers for Disease Control and Prevention, and Colorado State University. The value of this cooperative program and its underlying data sharing and communications cannot be over-emphasized.

The objective for the City of Fort Collins Mosquito Management Program is to utilize trained field biologists to suppress the number of mosquitoes, in the aquatic larval habitats. This reduces the potential for mosquitoes to emerge from the water to feed on and possibly infect the residents of Fort Collins. The City of Fort Collins monitors adult mosquito populations via a surveillance trapping network to enable a proactive response to suppress West Nile Virus vector mosquito populations prior to a public health emergency outbreak. Adult mosquito population data provides real time information regarding the risk associated with mosquito populations within the City of Fort Collins.  This data provides scientific premise when determining the need to reduce the mosquito populations via adult mosquito control materials.

This objective enables a decline in the overall mosquito populations, while reducing the threat of mosquito borne disease transmission, at the least possible cost, and with the least possible impact on the people and natural environment.  CMC will continue to strive and demonstrate a commitment to Integrated Pest Management principles for a progressive approach to mosquito reduction.
Please call 970-663-5697 to report any water that stands for more than 4 days, mosquito annoyance concerns, or for information regarding West Nile Virus prevention. Resident phone calls continue to locate new mosquito habitats, thereby reducing the number of mosquitoes in the backyards of Fort Collins residents.

Service Area

The City of Fort Collins has added valuable components to its program in 2014.  The city has opted to contract with CMC to perform site inspections and larval control applications during the months of May, June, July, August and September across 120 square miles of public and private lands. The City additionally provided funding for a backyard / public relations technician through CMC for 2014.  This technician can provide free backyard inspections upon request at residential homes for standing water.

How Is The Mosquito Management Program Funded?

Funding for the City of Fort Collins Mosquito Management Program is appropriated in three ways.  The majority of funding comes from a general fund from local tax revenue.  The Streets and Strom Water Division and FC Natural Areas fund the remainder of the cost for Mosquito Management services.  The monies collected from these three areas fund the surveillance monitoring of larval mosquitoes in the water, the application of bio-larvicide control products, and the monitoring of adult mosquito populations via mosquito traps throughout the city. There is no money set aside for adult mosquito spraying on an annual basis, nor is spraying for adult mosquitoes included in the scope of services provided.  If spraying occurs within the city based on West Nile Virus infection in mosquitoes, the city funds spraying through an emergency management fund.

Larval Control in the City of Fort Collins

This environmentally focused program always uses biological control choices first to reduce mosquito populations at the source…the aquatic larval habitats. Larvicide applications are designed to reduce mosquito populations below established disease thresholds. 

Field technicians methodically inspect larval habitats twice a week, weekly, bi-weekly or post rainfall, as deemed necessary based off of historical data.  A technician may spend the day inspecting a variety of habitats ranging from urban mosquito breeding locations (storm drains, catch basins, wading pools, paddle boats & tire piles), as well as cattail marshes, stagnant ditches, reservoir edges and irrigated pastures.  Inspections are performed to determine whether larval mosquitoes are present or not at a site. Once the presence of mosquito larvae is confirmed, larvicides are applied.

CMC’s favored method of larval mosquito control is through bacterial bio-rational products.  The main product used by CMC is a variety of naturally occurring soil bacteria, Bacillus thuringiensis var. israeliensisBti as it is known has become the cornerstone of mosquito control programs throughout the world.  The benefits include its efficacy and lack of environmental impacts.  When used properly successful control without impact to aquatic invertebrates, birds, mammals, fish, amphibians, reptiles, or humans can be achieved.  A broad label allows for the use of this product in the majority of the habitats throughout the service area.

Please click here to learn more about mosquito control efforts in Fort Collins during 2014.