Here's a closer look at the widespread measures used to control mosquitoes and what effects those efforts can have on the greater environment.
The product spreads along the surface of the water and prevents mosquito larvae from breathing the air above the water. The oil breaks down in sunlight, Sinsko said, and is gone within 24 hours. The quick breakdown of the product means it’s not a perfect solution since mosquitoes will once again be able to use that spot to breed.
The control program also uses separate insect growth regulators during larvicide operations that could affect something like dragonfly larvae, Sinsko said.The health department uses ultra-low volume machines set up on the back of trucks to spray droplets of an adulticide at night. This technique, sometimes called fogging, sprays out carefully calibrated droplets, Sinsko said.
Beekeepers and residents will call in with concerns during these sprays, Sinsko said, but because bees are not active at night when the trucks are spraying, there are no adverse effects. And even if the pesticide falls onto flowers the bees would use for pollen, it won’t be active by the time bees wake up and visit it.
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