
Pest Surveillance
ADULTS
CDC (Center for Disease Control) light traps are used to collect and monitor adult mosquito populations.
Traps are set in the late morning or early afternoon and are collected within 24 hours to be examined and identified at the OCW’s facility.
Our Biogent Traps run on 10,000 mAh battery packs which power LED lights and a fan. The trap omits CO2, a primary attractant to female mosquitoes. The female mosquitoes sense the CO2 and are drawn to the top of the trap; the trap’s fan blades then force the mosquitoes into the catch bag which is collected for identification.
If you see a trap please do not disturb.

LARVAE
Mosquito larvae populations are monitored through samples collected with dip cups. Our district entomologist and field biologists collect larvae in various swamps, wetlands, ponds, and ditches throughout the district.
Information regarding the VT Arbovirus Surveillance Report can be viewed with this link
