Treatment Updates

As part of our Vector-borne Disease Management Plan we may implement ultra low volume treatments by ground or air in areas where vector populations are unusually high or where disease has been detected.

Subscribe to our email updates and you will receive emails about mosquito treatments in your area. We will update those who sign up as soon as we know treatment is scheduled although we may not be able to notify the public if immediate applications are needed. We may cancel scheduled operations due to weather conditions or other unforeseen reasons. You can also follow us on Facebook, Twitter, Instagram or Nextdoor for other District updates.

  • Treatment Updates – Sign-up Form














Areas of western Placer are scheduled for treatment for West Nile virus and mosquito activity.  An EPA-approved mosquito adulticide will be applied in an ultra-low volume (ULV) fog by truck to target adult mosquitoes. Treatment areas (Click map for larger … Continue reading

The agricultural areas of western Placer County are scheduled for treatment for larval mosquito populations. Larval treatments involve an EPA-registered biorational* mosquito larvicide applied by a low-flying aircraft in an effort to prevent the emergence of adult mosquitoes and reduce … Continue reading

The agricultural areas of western Placer County are scheduled for treatment for larval mosquito populations. Larval treatments involve an EPA-registered biorational* mosquito larvicide applied by a low-flying aircraft in an effort to prevent the emergence of adult mosquitoes and reduce … Continue reading

Areas of Lincoln, Roseville, and western Placer County are scheduled for treatment. An EPA-registered mosquito adulticide will be applied in an ultra-low volume (ULV) fog by aircraft in an effort to address increased mosquito populations and elevated West Nile virus … Continue reading

An area outside of Lincoln is scheduled for treatment for West Nile virus and mosquito activity.  An EPA-approved mosquito adulticide will be applied in an ultra-low volume (ULV) fog by truck to target adult mosquitoes. Treatment areas (Click map for … Continue reading

Areas of western Placer are scheduled for treatment for West Nile virus and mosquito activity.  An EPA-approved mosquito adulticide will be applied in an ultra-low volume (ULV) fog by truck to target adult mosquitoes. Treatment areas (Click map for larger … Continue reading

Areas of western unincorporated Placer County are scheduled for treatment. An EPA-registered mosquito adulticide will be applied in an ultra-low volume (ULV) fog by aircraft in an effort to address increased mosquito populations and elevated West Nile virus activity. Treatment … Continue reading