Cowlitz County Mosquito Control District

Let us know how we can help you with your mosquito problem!

Mission Statement

We will minimize mosquito borne disease by reducing mosquito populations in Cowlitz County.

Policy Statement

It is impossible to eliminate all mosquitoes from the county. But by larviciding those areas where mosquitoes breed, we can greatly reduce mosquito populations and thereby reduce the chance of mosquito borne disease. Adult mosquito treatments will only be provided when public health is threatened by large populations of mosquitos that cause extreme annoyance or can carry disease.

We Will

  • Educate the public on how to prevent mosquitoes from breeding in their area.
  • Educate the public on how to reduce mosquito bites.
  • Work with the community to identify mosquito breeding sites.
  • Assist property owners with modifications that eliminate mosquito breeding areas on their property.
  • Check known breeding sites and treat when larvae are present.
  • Adulticide public areas when adult mosquitos are present in large enough numbers to become a nuissance. These include public roadways, parks, and other public gathering areas.

We Cannot

  • Eliminate all mosquitoes from the county.
  • Remove tires and other debris.
  • Adulticide private property without expressed permission from property owner.

Request A Service Call

Please call our office Phone #360-423-5311. If we are not in the office at that time please leave a message we will get in contact with you as soon as possible.

Our Priorities

How We Charge

We only assess owners of land and strive to structure our assessments so that the charge reflects the benefit received. To accomplish this, we do the following:

  • Assess all recorded lots within the District under 1 acre at a flat fee.
  • Add a surcharge to the flat fee to certain areas with known high concentration of mosquitos.
  • Charge higher rates for parcels over 1 acre based on total parcel size.

October 14th, 2025

By Cowlitz Mosquito Control | October 10, 2025

Meeting Notice and AGENDA To take place at the District Office at 1319 S 13th Avenue, Kelso WA 98626 and on Zoom. Time: October 14th, 2025 06:00 PM Pacific Time (US and Canada) Topic: CCMCD October 14th, 2025 Meeting Time: Oct 14, 2025 06:00 PM Pacific Time (US and Canada) Join Zoom Meeting https://us02web.zoom.us/j/82729125575?pwd=TaHAw2SFDPchLqzf2i7qqKy2pBBqmd.1 Meeting […]

September 30th, 2025

By Cowlitz Mosquito Control | September 19, 2025

Special Meeting Notice and AGENDA To take place at the District Office at 1319 S 13th Avenue, Kelso WA 98626 and on Zoom. Time: Sep 30, 2025 06:00 PM Pacific Time (US and Canada) Join Zoom Meetinghttps://us02web.zoom.us/j/89074461368?pwd=CGohuMMtugyo7PYHigeLyaRymSG8dI.1 Meeting ID: 890 7446 1368Passcode: 430845 One tap mobile+12532050468,,89074461368#,,,,*430845# US+12532158782,,89074461368#,,,,*430845# US (Tacoma) Join instructionshttps://us02web.zoom.us/meetings/89074461368/invitations?signature=HtUQM_PzzN3Pp_yHd68fRf6LZ_PaVMSUu4c8fxA_PN0 Call to order………………………………………………………………………………. President […]

September 9th, 2025

By Cowlitz Mosquito Control | September 3, 2025

Meeting Notice and AGENDA To take place at the District Office at 1319 S 13th Avenue, Kelso WA 98626 and on Zoom. Topic: CCMCD September 9th, 2025 Meeting Time: Sep 9, 2025 06:00 PM Pacific Time (US and Canada) Join Zoom Meeting https://us02web.zoom.us/j/81382675392 Meeting ID: 813 8267 5392 One tap mobile +12532050468,,81382675392# US +12532158782,,81382675392# US […]

July 8th, 2025

By Cowlitz Mosquito Control | July 1, 2025

Meeting Notice and AGENDA   To take place at the District Office at 1319 S 13th Avenue, Kelso WA 98626 and on Zoom. Topic: CCMCD July 8th 2025 Meeting Time: Jul 8, 2025 06:00 PM Pacific Time (US and Canada) Join Zoom Meeting Meeting ID: 862 7132 1410 Passcode: 795379 One tap mobile +12532050468,,86271321410#,,,,*795379# US […]

Meeting Notice and

By Cowlitz Mosquito Control | March 6, 2025

AGENDA   March 11th, 2025 Join Zoom Meetinghttps://us02web.zoom.us/j/82490904035?pwd=9baDI0KYbrdq8dqJz9WyW82AXIasJt.1 Meeting ID: 824 9090 4035Passcode: 029185 — One tap mobile+12532158782,,82490904035#,,,,*029185# US (Tacoma)+12532050468,,82490904035#,,,,*029185# US — Dial by your location• +1 253 215 8782 US (Tacoma)• +1 253 205 0468 US• +1 346 248 7799 US (Houston)• +1 408 638 0968 US (San Jose)• +1 669 444 9171 US• […]