The City of Portage la Prairie’s mosquito larviciding program is well underway. Contractors have completed three rounds of larviciding since mid May and the fourth round started this week. An environmentally friendly larviciding program is used to target mosquito larvae while they’re still in the larval stage before they reach the adult or biting stage. Controlling mosquitoes in the larval stage of development is usually considered the best option for controlling mosquitoes in large geographic areas such as towns and cities.
Below, the City of Portage la Prairie’s larviciding contractor uses a variety of equipment to sample and treat standing water sites as well as gather information related to the development stage of the larvae. From the information gathered, he anticipates we could start seeing adult mosquitoes in Portage la Prairie this week.

sampling standing water for larvae

treating standing water

environmentally safe granular larvicide