The wetlands and 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 … Continue reading

Several West Nile virus indicators (dead birds and mosquito samples) have been detected in eastern Roseville and Granite Bay. This level of virus activity in this area is the highest for the season.  The Placer Mosquito and Vector Control District … Continue reading

Areas of Roseville and Rocklin 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. Treatment areas (click … Continue reading

Additional West Nile virus test results for birds and mosquitoes have indicated increased West Nile virus activity in a larger area of Roseville and parts of Rocklin. All West Nile virus-positive indicators are currently being evaluated, and aerial and ground-based … Continue reading