Skip to main content

This bites: Mosquito season is underway

  • Author:
  • Updated:

In yet another sign of spring, Minnesota's annual battle against the mosquito has been launched.

Metropolitan Mosquito Control District helicopters this week are buzzing over Twin Cities wetlands and other large areas of standing water in an annual battle against the airborne pest.

Three choppers took flight Tuesday, hitting areas of Afton, Apple Valley, Eagan, Eden Prairie, Inver Grove Heights, Little Canada, Maplewood, Mendota Heights, North St. Paul, St. Paul, South St. Paul, Shoreview, Rosemount, Roseville, Sand Creek Township, Savage, Shakopee and West St. Paul, according to the MMCD.

The agency says it will try to keep a list here of updated areas targeted for spraying. You can see if the agency typically treats your area here.

Post by Metropolitan Mosquito Control District.

Officials note that they do not spray insecticides to control adult mosquitoes. Instead, helicopters apply dry pellets of an agent called methoprene, which contains a natural soil bacterium that prevents larval mosquitoes from growing into biting adults. The treatments pose no risk to human or animal health, officials note.

With ice still on some metro-area lakes, it might seem a bit early to start battling the buzzy bugs. But mosquito-control officials say they are getting started about a week later than last year, due to cold and snow.

“They’re available to hatch as soon as the snow starts to melt,” MMCD spokesman Mike McLean told the Star Tribune. “A lot of them are found from here all the way into the tundra. They’re well-adapted to winter.”

Worldwide, mosquitoes are blamed for 3 million deaths a year from diseases like malaria, yellow fever, dengue fever and West Nile virus, although most mosquito-borne disease deaths occur in a band of countries along the equator.

Last year there were 79 cases of West Nile virus in Minnesota, with three deaths, according to state statistics (county-by-county map/stats here). That compared to 70 cases and one death in 2012.

Next Up


Minnesota health officials warn monkeypox cases could grow rapidly

The state has so far confirmed only six cases of monkeypox virus.


Sheriff: 2 kids dead in Vadnais Lake, search continues for 3rd child, mother

"A horrible set of facts appears to be developing," said Sheriff Bob Fletcher.

Pixabay laptop keyboard phone dark

Charges: Duluth man had hundreds of child porn images, videos

The National Center for Missing and Exploited Children found nearly 330 images on the man's electronic devices.

hennepin county sheriff water patrol lake minnetonka

Scuba diver found dead in Lake Minnetonka identified as 20-year-old

The Hennepin County Medical Examiner's Office said 20-year-old Brady Alan Aune, from Elko New Market, died of freshwater drowning on June 3.

Screen Shot 2022-06-30 at 11.18.35 AM

Felony charges filed after authorities search 'Peacebunny Cottage'

The president of the rabbit rescue non-profit faces multiple animal cruelty charges after over 40 rabbits were found dead inside the organization's barn.

monkeypox virus

Minnesota up to 6 confirmed cases of monkeypox virus

Most people recover at home within 2-4 weeks.

thc edibles

Did Minnesota just accidentally legalize THC?

A Republican lawmaker who voted to approve the new law in May is already talking about rolling it back.

Screen Shot 2022-06-30 at 3.19.42 PM

Gasoline may be cause of sewer explosion on U of M campus

An all-clear was given around 9 p.m. Thursday, with residents in the area allowed to return to their homes.


Overwhelming demand for THC products on first day of new law in MN

One shop owner said his Chaska store broke the online sales record before they opened Friday morning.

Flickr - Lake Minnetonka boat - Greg Gjerdingen

Increased drunk boating enforcement over 4th of July weekend

The increased enforcement is part of the Operation Dry Water initiative.


Four kayakers stranded, rescued in Chisholm park

The kayakers became stranded at Redhead Mountain Bike Park Thursday afternoon.


Duo charged after 10-pound meth package sent to wrong address

More than 10 pounds of meth are off the street thanks to a delivery error.