Not only a nuisance, mosquitoes can pose a serious health threat to people. Disease can be spread to people through the bite of an infected mosquito. Over 40 different mosquito species can be found in Washington, and many are vectors for diseases, such as West Nile virus, western equine encephalitis, and St. Louis encephalitis.
In Cowlitz County the Cowlitz County Mosquito Control District works to keep mosquito populations at a reduced level. Please see there website linked below for the services they provide.