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Thanksgiving – Monday, October 14. View holiday hours for City of Winnipeg facilities and services.

Thanksgiving – Monday, October 14. View holiday hours for City of Winnipeg facilities and services.

Insect Control

Residual Treatments

What are Residual Treatments?

Residual treatments can be an effective supplement to larviciding by reducing adult nuisance mosquito populations in localized areas, and is an important component in an Integrated Pest Management approach. Residual treatments are considered the first line of defense in controlling adult mosquito populations.

Residual treatments are sprayed where localized high populations of mosquitoes have been identified by spraying environmentally sensitive products onto areas of long grass and borders of bushes on public property (i.e. parks, golf courses) in order to kill adult mosquitoes in their resting place during the day. Residual treatments can reduce adult mosquito numbers for approximately a week.


Last update: March 13, 2020
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Administrative Office and Research Laboratory
1539 Waverley Street
Winnipeg MB R3T 4V7

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3 Grey Street
Winnipeg MB R2L 1V2
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