Flood water and warm weather have created the perfect storm for mosquitoes in the Okanagan.
Peak season is on its way through until mid-July.
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In the Central Okanagan, the usual standing water treatments are being expanded with extra crews.
In the south, the Regional District of Okanagan-Similkameen is spreading bacterial larvacide in low-flying helicopter runs over known breeding areas.
Standing water on private property should be removed, according to officials.