Pests are among the most common problems in Montreal housing. Whether you live in an old duplex, a recent condo, or a single-family home, understanding the behavior of these pests is key to eliminating them effectively.

In short: This article covers the causes, signs, and solutions for pests in Montreal housing. Based on actual interventions in the neighborhood by certified technicians.


Montreal: Why the pests are frequent here

The Montreal neighborhood has characteristics that favor the presence of pests. The density of housing, the age of the buildings, and the proximity to green spaces or waterways create a conducive environment. Plexes built before the 1980s often have gaps in their foundations and around plumbing that pests exploit.

Our certified technicians regularly work in Montreal and are familiar with the particularities of local buildings. This local knowledge allows us to adapt each intervention to the actual conditions of your home.


What our technicians observant in Montreal

During our regular service calls in Montreal, our certified technicians notice recurring pest-related situations:

  • Buildings constructed before 1980 systematically have multiple entry points at the foundation and plumbing levels.
  • Recently renovated buildings are not immune—the work sometimes creates new openings that are overlooked
  • The proximity of green spaces, alleys, or food stores significantly increases the risk of infestation.
  • Partially treated infestations (without sealing) return in 80% of cases within the following 3 months

Measures of prevention effective

To protect your home in Montreal from pests, adopt these preventive measures recommended by our technicians:

Clogging: Seal all openings larger than 6 mm around plumbing, foundations, and window frames with steel wool and caulk.

✅ Food Storage: Store all food in airtight glass or rigid plastic containers

Waste Management: Take out the trash regularly and use containers with airtight lids

Humidity control: Repair leaks, ventilate bathrooms, and use a dehumidifier in the basement if necessary.

✅ Seasonal Inspection: Check entry points before each fall, especially after renovations.


When to call a professional certified

Certain situations in Montreal absolutely require the intervention of a certified pest control professional:

  • Recurring signs: The pests are back despite your prevention efforts — the source has not been identified
  • Multi-unit building A coordinated approach is needed to handle multiple units simultaneously.
  • Presence of children or animals: Only professional products approved by Health Canada guarantee safe application.
  • Structural damage: Pests that damage wood, insulation, or wiring require thorough diagnosis

Our certified technicians operate in Montreal and surrounding areas with methods adapted to each type of building. Visit our page Montréal to learn more.


People are asking also

When should you call a professional?

As soon as you notice recurring signs: droppings, noises in the walls, material damage, or a regular presence of pests. The faster the intervention, the more effective and affordable it will be.

Are professional treatments safe?

Yes. All products used are approved by Health Canada and applied in a targeted manner by certified technicians. Safety instructions are provided before each treatment.


Resources for your neighborhood

Check out our page Pest control services in Montreal for more information on interventions in your sector.

We also operate in Villeray, Rosemont, Plateau Mont-Royal, Hochelaga-Maisonneuve, Notre-Dame-de-Grâce.

And in the neighboring neighborhoods?

  • Plateau-Mont-Royal — For targeted advice on this neighboring district, consult our local service page.
  • Rosemont-La Petite-Patrie — For targeted advice on this neighboring district, consult our local service page.
  • Villeray-Saint-Michel — For targeted advice on this neighboring district, consult our local service page.
  • Ahuntsic-Cartierville — For targeted advice on this neighboring district, consult our local service page.
  • Saint-Laurent — For targeted advice on this neighboring district, consult our local service page.
Montreal's Seasonal Pest Activity
January
Mouse
February
Mouse
Mar
Rats, Mice
Avr
Rats, Cockroaches
May
All harmful
June
All harmful
July
All harmful
August
All harmful
September
Rats, Mice
October
Mice, Cockroaches
Nov
Mouse
December
Mouse
Peak activity Moderate activity Low activity