From May 1 to August 31, Vector Control will be using helicopters to apply mosquito larvicides to standing water in unpopulated wetlands and floodplains along the Columbia and Willamette River. We do this to control mosquitoes.
The larvicides (B.t.i. and L.s.) are bacteria that specifically target and kill mosquito larvae. It only attacks mosquito larvae and is safe for people, other insects and animals.
If you have any questions contact us.
Contact Us
Multnomah County Vector Control
5235 N Columbia Blvd
Portland, Oregon
503.988.3464
