Posted: April 19, 2021 2021 Mosquito Control Program underway Efforts by the City of Cranbrook are well underway to battle a possible boom in the local mosquito population, with early monitoring showing a lot of mosquito larvae activity. Over the last two weeks, the city’s contractor completed the first treatment directed at the mosquitoes in the larval stage, by hand placing the granular larvacide Aquabac onto sites where larvae have been found. This larvicide contains a naturally occurring bacterium known as Bti, which targets the mosquito larvae, but does not harm birds, mammals, beneficial insects or amphibians. This product is registered for this use in Canada.