Mosquito Sampling Collections

2020 Larval Mosquito Collections Started April 1st!


Larvae sampling is conducted at over 175 sites documented throughout the county, including permanent and semi-permanent waters, retention ponds, sewage pump stations, ditches, stagnant pools, and human-created artificial water sources. In addition, residents reporting mosquito complaints or areas of concern are investigated as they are reported.

Collections that produce high larva counts trigger a control response based on the program's Integrated Mosquito Management (IMM) Plan. Treatment of the site includes using backpack sprayers dispensing the appropriate control material approved for use on the particular mosquito species and site.

Keep scrolling down to learn more about our adult sampling program.

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Adult Mosquito Sampling


Throughout the mosquito season (April 1 to September 27), adult mosquitoes are collected using 3 different types of traps.

Collections are taken to the DEP lab to determine if the moquitoes are infected with West Nile Virus.

Assessments are then made based on pre-determined thresholds to determine if there is a significant health risk present that would warrant an adult mosquito spray event.