PUBLIC NOTICE:

The City of Okanogan will be applying Vectobac 12AS (Bacillus thuringiensis); Natular G30 (Spinosad; Biomist 3+15 ULV (Permethrin, Piperonyl Butoxide); Duet Dual Action Adulticide (Sumithrin, Prallethrin) for mosquito control within the Okanogan Corporate City Limits, during the 2026 abatement season.

Pesticide applications will begin in April 2026 and continue as needed through October 2026. Pesticide information and ground based ultra-low volume fogging schedules can be viewed at www.okanogancity.com. Citizens wishing to be added to a no “Spray List” can complete the form linked below and return to the City of Okanogan Public Works Director, Shawn Davisson at 509.422.3600 or publicworks@okanogancity.com. Information about the products planned for use can be found at www.clarke.com. 

Dates of Application Larvacides:

  • As needed April-October 2026

Dates of Application Adulticides 2026:

  • As needed April-October 2026
Request to be added to No Spray List for Mosquito Abatement

Request to be removed from No Spray List for Mosquito Abatement

Property Access Authorization for Mosquito Abatement

Safety Data Sheets

City of Okanogan Boundary

Mosquito Control Methods
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