Why Are Mosquitoes Swarming Portland? For Starters, the County Didn't Spray.
Mosquito populations are up fivefold this summer—and Multnomah County is giving out free mosquito fish to help limit their spread of the biting insects.
Levi Zahn Vector Control Department Multnomah County Vector Multnomah County Vector Control Vector Control Columbia River
Source: pdxmonthly.com