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The City of Lethbridge aims to mitigate the mosquito larvae population throughout the community. (Photo: LNN)

City of Lethbridge launches mosquito mitigation project

May 29, 2024 | 11:15 AM

LETHBRIDGE, AB – The City of Lethbridge is looking to keep its mosquito population to a minimum in 2024.

Todd Carter, mosquito technician for the City of Lethbridge Parks and Cemeteries department is responsible for mitigating the mosquito larvae before they become fully-grown.

“We like to get out following a rainfall,” Carter says.

“Two or three days after we can look for our seven to 10-day window where we’ll find mosquito larvae and treat them with a larvicide to try to keep those numbers down before they reach adulthood.”

Mosquito larvae become full grown mosquitos if not treated. (Video: Todd Carter)

He adds that larvae can generally be found in shallow, stagnant water, and they thrive in warm and moist conditions.

“We do have an extensive mapping system that we have developed over the years, recording areas where we find shallow, stagnant water. Semi-permanent water bodies – we monitor those regularly. We have hot spots and this year with the heavy rains in May, we are seeing more standing water than in the past.”

The City uses bacteria for its treatment, which is only harmful to insects.

“We use a bacteria, BTI, that’s placed on cornmeal, and we hand broadcast that into our water bodies. [It’s] non-toxic, it only targets mosquito larvae, black flies, and certain species of midges.”

Carter also provided some insight on how to prevent mosquito larvae from settling in your yard.

“You can make sure you don’t have standing water in your yard. Keep your bird baths clean and empty, [with] fresh water. Cover your rain barrels.”

READ MORE: Lethbridge News Now.

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