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City services in the event of a Canada Post work stoppage

City services in the event of a Canada Post work stoppage

Insect Control

Insecticide Use Notification

City of Winnipeg Public Works Department
Public notice - Insecticide Use Program for 2025

Public Notice Insecticide Use for 2025

Bugs are part of life in Winnipeg. Our job is to minimize their nuisance.

Our insect control branch will be out again this year treating Winnipeg for common pests.

Below, you’ll find a breakdown of our planned activities.

Mosquito larviciding

  • Targets mosquito larvae in standing water
  • Is done on both public and private property throughout Winnipeg and up to 10 km outside city limits
  • Expected to run April 7 to October 18, 2025
  • Insecticide to be used:

Adult mosquito control

  • Targets adult mosquitoes on streets and lanes and in parks, golf courses, and cemeteries within Winnipeg
  • Expected to run May 26 to September 27, 2025
  • Insecticide to be used:

Tree pest caterpillar control

  • Targets cankerworms, forest tent caterpillars, and fall webworm caterpillars on City-owned trees
  • Expected to run May 4 to September 5, 2025
  • Insecticide to be used:
    • Foray® 48B (Bacillus thuringiensis var. kurstaki - Btk)

Emerald ash borer control

  • Targets emerald ash borers on public property
  • Conducted by injecting insecticide into the trunk of ash trees
  • Expected to run June 2 to September 27, 2025
  • Insecticide to be used:

Wasp and ant control

Other pest control as needed

Objections

If you object to the use of pesticide next to your property, please send a written submission within 15 days of this notice being published to:

Manitoba Environment and Climate Change
Environmental Approvals Branch
14 Fultz Boulevard, Box 35
Winnipeg, Manitoba, R3Y 0L6

Buffer zones

You can request a no-pesticide exemption (buffer zone) for your property by sending a letter with your name, address, and proof of occupancy (driver’s licence, utility bill, etc) by:

  • Mail: To Insect Control Branch, 3 Grey Street, Winnipeg, Manitoba, R2L 1V2
  • Fax: To 311
  • Online: At winnipeg.ca/311

    • We must receive buffer zone requests at least 3 days prior to the anticipated start date of the program. Registration must be renewed every year.

    Register for advance notification of insect control activities online at winnipeg.ca/insectcontrol or by contacting 311.

    Last update: February 19, 2025

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