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














Several West Nile virus indicators (dead birds and mosquito samples) have been detected in Lincoln and the surrounding area. This level of virus activity in this area is the highest so far for the season. The Placer Mosquito and Vector … 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

West Nile virus (WNV) continues to be detected in Placer County.  We continue to do wide area larval mosquito control treatments in agricultural areas to reduce immature mosquitoes that may become WNV-infected biting adult mosquitoes later in the season.   Please … 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 Roseville, Lincoln, 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 high mosquito numbers and West Nile virus activity. … Continue reading

West Nile virus (WNV) continues to be detected in mosquito samples in Placer County.  We continue to do larval mosquito control treatments in agricultural areas to reduce immature mosquitoes that may become WNV-infected biting adult mosquitoes later in the season.   … Continue reading

West Nile virus (WNV) has been detected in Placer County.  We continue to do larval mosquito control treatments in agricultural areas to reduce immature mosquitoes that may become WNV-infected biting adult mosquitoes later in the season.   Please check your property … Continue reading