ROSEVILLE, Calif., August 4, 2022 – The Placer Mosquito and Vector Control District detected  three more invasive (non-native) species of mosquito yesterday Wednesday August 3.  Two female and one male Aedes aegypti, commonly known as the yellow fever mosquito, were found in the Thieles Manor and Cresthaven  neighborhoods of Roseville.

“These detections mean that invasive mosquitoes are potentially more widespread than previously thought,” said Joel Buettner, General Manager. “We ask residents to help us by allowing our technicians to inspect front and back yards of nearby properties.”

The District uses a science-based, Integrated Vector Management approach to assess mosquito activity and conduct appropriate mosquito control. The District’s approach for the detected mosquito area is conducting door-to-door property inspections, setting mosquito traps to determine the infestation level, and conducting localized truck-based larvicide applications to treat standing water in containers, potted plant drip trays, or other  sources of water where invasive mosquitoes can develop.

The public can help protect themselves by reporting unusual, daytime mosquito biting. The District also urges the public to eliminate standing water and runoff or pooling from irrigation systems since these mosquitoes can breed in small amounts of water and cryptic sources. Residents can also prevent mosquito bites by using EPA-registered repellents.

For more information, contact the Placer Mosquito and Vector Control District at (916) 380-5444 or Follow the District on FacebookTwitterInstagram and TikTok: @placermosquito. For a list of EPA-registered repellents, please visit or