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Mosquito Control Program

The control of mosquitoes is a major concern. Without control programs, the mosquito population would flourish and cause potential health and comfort problems.

From a health standpoint, mosquitoes are known carriers of encephalitis, malaria, yellow fever and dengue viruses. Mosquito-borne diseases cause more than one million deaths each year around the world. Mosquito bites can also infect a pet with the deadly canine heartworm.

One must also consider the nuisance factor, the discomfort mosquito bites cause while we try to enjoy the outdoors.

Mosquitoes can migrate up to 15 miles, which overrides larval control efforts. This results in the need for adult mosquito control.

The City of Clear Lake started an annual mosquito control program. This program involves the use of an ultra-low volume ground sprayer dispensing Masterline Kontrol 4-4 and/or Biomist 4 + 4. It is an insecticide that is a synthetic compound resembling a substance produced by chrysanthemums, to reduce the mosquito populations. The insecticide resembles naturally occurring plant products, which are toxic to insects. This insecticide is among the least harmful products available, breaks down rapidly in the environment, and poses almost no risk to people and pets in the concentrations being used for mosquito control. Insecticides of this type have been used primarily to control mosquitoes, midges, gnats, and flies.

Spraying will tentatively occur between Monday evening and Saturday a.m. depending upon the weather (weather permitting and wind speed no greater than 10 mph).  City staff will spray beginning at 7:00 p.m. and continue as long as temperatures and wind speeds are at acceptable levels.  Spraying may resume in the morning at 4:00 a.m. and end at approximately 7:00 a.m. 

Spraying continues throughout the summer as long as mosquito population counts justify the spraying.  

Due to concerns about pesticide exposure, the City will maintain a list of those residents who do not wish their property to be treated with pesticides. Each year, residents must notify, in writing, the Clear Lake Public Works Department if they do not wish to have the area adjacent to their property sprayed. The notice must be submitted to the Clear Lake Public Works Department so they may be added to the list. The sprayer will be shut off approximately 150’ from the property. This is the maximum distance that will be used, due to those residents who want the benefit and protection of the service.

       
       
       
      City of Clear Lake Iowa
      15 N 6th St. | P.O. Box 185 Clear Lake, IA 50428  |  Phone: (641) 357-5267  |  Fax: (641) 357-8711
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