It’s mosquito season, and you may notice the pesky bloodsuckers around Cranbrook and southern British Columbia.
The City of Cranbrook is not immune, even with its annual mosquito control program actively treating potential breeding sites around the community.
High water and plenty of rain events this spring have created a significant storm of mosquitoes, which really need hotter, drier temperatures to naturally deal with them.
The City’s contractor Morrow BioScience has actively been treating areas in and around the community since May 5 to kill mosquito larvae in a program that is done each year by applying both Vectobac and Vectolex.
“We’ve been fortunate for many years where the mosquito population in Cranbrook has been quite minimal, thanks to the mosquito treatment work being done and the weather cooperating,” says Chris Zettel, Corporate Communications Officer, City of Cranbrook.
“But Mother Nature has had other plans this year, with the cooler, wet weather across the Kootenays into southern Alberta this spring creating the perfect conditions for a mosquito boom we haven’t seen in years.
“Luckily, the weather has warmed up significantly, and it is expected to remain hot all week, so that will go a long way in helping reduce our mosquito numbers.”
Residents can help by regularly checking their properties and removing standing water from things like tires, tarps, boats, bird baths, unmaintained pools, children’s toys, pet dishes, flowerpot trays, clogged gutters, and ditches.
Reducing standing water is one of the simplest ways everyone can help keep mosquito populations low.
Potential mosquito breeding sites will continue to be treated to kill larva as needed throughout the year.
Mosquito Treatment Locations and Dates Map 2026. (Image Credit: The City of Cranbrook.)
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