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Heavy rains lead to increased mosquito populations - some tips to help control them

By Central Office September 12, 2018

Contact(s): Lisa Johnson, Horticulture Educator, University of Wisconsin Extension,; 608-224-3721 OR Andrea Diss-Torrance, DNR Invasive Forest Insects Program Coordinator, 608-264-9247

MADISON -- An unusual amount of rainfall in Wisconsin has resulted in lots of standing water in places that are normally dry. Unfortunately for people, mosquito larvae, sometimes called wrigglers, develop in standing water, so their populations have surged over the last few weeks.

Mosquitoes can develop in flood water but also in surprisingly small volumes of water in standing containers, abundant in our yards and neighborhoods in the form of rain barrels, fish ponds, bird baths, old tires, planters, tree cavities, gutters or anything that holds water.

To help control the outdoor mosquito population on your property, eliminate their breeding places:

Inside the house, keep window and porch screens in good repair. Use weather-stripping to fill gaps around windows and doors. Remember that mosquitoes also bite animals; provide pets refuge inside the house or in screened-in areas.

If you must go outside at dawn or dusk when mosquitoes are most active, take precautions to avoid being bitten.

For more information, see "Mosquitoes in and Around the Home".

Last Revised: Wednesday, September 12, 2018

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