Midland County Mosquito Control crews are ready to take on mosquitoes in local neighborhoods.

Nighttime fogging to kill adult flying mosquitoes, known as Ultra Low Volume (ULV) fogging, has begun and will continue through mid September.

“ULV treatment affects mosquitoes that fly through the fog and doesn’t leave residue for long-term control,” said Tom Wilmot, Midland County Mosquito Control director.

Workers have been busy treating standing water in wooded areas over the last month to control larvae of mosquito species that hatch out in early spring.

“The development of this first generation of mosquito larvae was a week or two later than usual this year due to the cold spring, but the emergence of adult mosquitoes is happening now,” said Douglas Allen, Midland County biologist.

Effective fogging depends on good weather and is only conducted on evenings with warm temperatures and light winds. In the early summer, night-time treatment is concentrated in forested areas that produce the spring mosquitoes. Night-time fogging usually starts about one hour before sunset and continues for three or four hours each evening, weather permitting. After a few fogging trips through an area, residents should begin to see some relief from the biting mosquitoes.

For ULV and other treatment schedules, residents can visit the Midland County website at co.midland.mi.us or call the mosquito control hotline at (989) 832-6397.

Fogging is only one part of the continuing program to control mosquitoes, officials said. Mosquito and disease surveys are conducted to guide the selection and timing of control operations and mosquito control crews will continue treating standing water throughout the summer. Aquatic habitat that can produce significant numbers of summer mosquitoes include temporarily-flooded ditches and grasslands, cattail marshes, catch basins and containers.