Using pesticides

Last updated August 4, 2026

Are you planning to use pesticides? Please be advised that the use of domestic pesticides is regulated, as is the use of residential and commercial pesticides outside buildings.

To protect the health of the population and preserve the environment and biodiversity, the city regulates the sale and use of pesticides. As of January 1, 2022, 33 molecules used in pesticides are banned in Montréal.

  • Benomyl
  • Captan
  • Chlorothalonil
  • Iprodione
  • Quintozene
  • Thiophanate-methyl
  • 2.4-D sodium salts
  • 2.4-D esters
  • 2.4-D acid forms
  • 2.4-D amine salts (all chemical forms)
  • Glyphosate
  • MPCA esters
  • MPCA amine salts
  • MPCA sodium or potassium salts
  • Mecroprop acid forms
  • Mecroprop amine salts
  • Mecroprop sodium or potassium salts
  • Acetamiprid
  • Carbaryl
  • Clothianidin
  • Dicofol
  • Dinotefuran
  • Imidaclopride
  • Malathion
  • Sulfoxaflor
  • Thiacloprid
  • Thiamethoxam
  • Brodifacoum
  • Bromadiolone
  • Bromethaline
  • Chlorophacinone
  • Difethialone
  • Phosphine

Residential use 

The by-law states that residents who use pesticides that contain these banned molecules may face fines.

To protect your health and that of ecosystems, consider safer and more environmentally friendly alternatives. As a last resort, if your problem persists, you can use biopesticides, products made from microorganisms that come from natural sources.

If you are using a professional horticulturist, lawn maintenance specialist or exterminator, make sure that individual or company holds a permit to use authorized pesticides. There is a list (in French) of companies who have a permit.

Sale of pesticides

Merchants

The city prohibits merchants from selling products intended for citizens containing the banned molecules.

Commercial applicators

Learn more about the topic

Shows borough content for
Find a borough to filter the list of search content.