Pesticides

Harmful effects of pesticides

Pesticides are chemicals designed in the laboratory to destroy unwanted organisms. They contain toxic ingredients that have been linked to cancer. Children and animals are particularly vulnerable to pesticides because they’re smaller and spend more time outdoors. It's estimated that in a given pesticide application, only 1% reaches the targeted insects while the rest makes its way into the environment.

Regulations

By-Law 1556 on the Outdoor Use of Fertilizers and Pesticides states that no outdoor application of pesticides is permitted within the territory of the City except as provided for in the by-law.

Contractors wishing to apply low-impact pesticides—including TreeAzin® for controlling Emerald Ash Borer—or fertilizer in Vaudreuil-Dorion must have an annual certificate of registration issued by the City. Unregistered contractors could be fined $500 to $1,000 plus costs.

Note that the annual registration certificate does not replace the temporary application permit. This permit is in addition to the annual registration certificate when a specific situation requires the application of a pesticide other than a low-impact pesticide. 

Download the registration certificate application form (In French).

For more information on how to obtain the certificate, call the Permits and Inspections Division.

Authorized contractors for the 2026 season

Last update: April 16, 2026

Name of company	Approved products
Maheu & Maheu	Greenway  Doktor doom  Niniban Onguard Onguard mousseux
GROUPE C'EST VERT INC.	Fiesta Concentré de fabrication de gluten de maïs liquide  Safer Bio titan WP
INSIGHT PEST SOLUTIONS QC CORP	Safer's savon insecticide
ABC GESTION PARASITAIRE	Mosquito Barrier Niban Safer's savon insecticide

The list of licensed contractors is evergreen and is updated regularly as permits are issued. A contractor who has obtained an annual registration certificate for low impact pesticide or fertilizer application, but is not listed, should contact the Permits and Inspections Division at infourbanisme@ville.vaudreuil-dorion.qc.ca. They will be listed as soon as possible.