The Skamania County Mosquito Control District will begin seasonal activities around March 23, 2022. Only when mosquito larva is found will they use one of the following larvicides.
- VectoMax WSP (Bacillus Sphaericus, Bacillus Thuringiensis Israelensis): specific for mosquito larva
- Altosid (S-Methoprene) a growth inhibitor active on early stages of mosquito larva
- Agnique (poly-alpha –w-hydroxy): a monomolecular surface film used for later stages of larva and pupa
Later in the season and only in those areas where adult mosquitoes reach thresholds as specified in District IMM plan or if mosquito transmitted disease is detected, will the district adulticide using:
- Aqua Pursuit ULV-Permethrin/Piperonyl Butozide -fogged at a rate between 0.0015 and 0.007 ounces per acre.
Mosquito control activities will continue throughout the season until mid to late October depending on weather conditions
Phone or email the Mosquito Control District for further information or to report mosquito problems within District boundaries – (360) 904-4345 or SCmosquitocontrol@gmail.com . Additional information and schedule changes will be posted and updated on our website https://mosquitoboard.wordpress.com. You may also contact the Dept. of Ecology, Water Quality Program, Attn: Aquatic Pesticide Permit Manager, P.O. Box 47696, Olympia, WA 98504
Posted by Skamania County Mosquito Control District 
Skamania County Mosquito Control District 