The use of pesticides outside buildings is prohibited.


Prohibited products may be used in certain exceptional situations, all of which are out-lined in the by-law:

  1. if it's a biopesticide accepted by the Pest Management Regulatory Agency (PMRA) or if they are ingredients mentionned in the document "Low-impact pesticides", except if they are enriched by another active pest-controlled ingredient.
  2. in pools and decorative ponds or self-contained artificial basins.
  3. for an infestation, but only with a permit and after ecological alternatives have been exhausted.
  4. within a radius of 5 m of warehouses and food manufacturing companies to ensure vermin control, but only with a permit.
  5. in case of use of insect repellent and rat poison to eliminate mice and smal rodents.
  6. in case of use of insecticide collars for animals.

Anyone wishing to use pesticides to control an infestation, vermin, spiders, or ants must first obtain a permit.


It costs $10. for an individual and $25. for a corporation to purchase a permit from the municipality. Such a permit is valid for a maximum of 10 days from the date of issue and comes with a number of strict conditions.

Any person who contravenes this by-law is guilty of an offence and is liable to a fine.


  1. Low-impact Pesticides (authorized products)
    Montréal Botanical Garden (PDF - 714 KB)
  2. Information tool on the risks of pesticide for the health and the envionment (in French)

Information: 514 633-4125

During the summer, an eco-technician is available to assist residents in adopting new lawn-care methods and to provide them with pesticides-free alternatives.
To contact the City of Dorval’s Green Line, call at 514 633-4018
or write at

To consult the integral version of the by-law concerning pesticide use, please click here. (PDF - 44 KB)