The presence of cockroaches at home or in a business in Montreal, Laval, and the South Shore is a common problem, especially in kitchens and bathrooms. To prevent rapid spread, it is important to recognize the signs of infestation, correct the causes and apply a professional treatment with monitoring and prevention.

Key points: The German cockroach is the most common type in Montreal. It hides near heat and moisture (stove, refrigerator, dishwasher) and reproduces very quickly—a structured treatment is required.

Signs of a cockroach infestation

  • Nighttime observations in the kitchen and bathroom (quickly when you turn on the light).
  • Small droppings similar to ground pepper in cabinets, hinges, cracks, and baseboards.
  • Smells sour or sweet in hiding places.
  • Oothecae (egg capsules) found near appliances or in crevices.
  • Traces of dirt and dark spots around cabinet handles and electrical outlets.

Causes and aggravating factors

  • Humidity + heat : leaks under the sink, condensation behind the refrigerator, dishwasher.
  • Accessible food : crumbs, oils, unsealed food, open trash cans.
  • Entry points : cracks, plumbing holes, electrical conduits, old buildings.
  • Inter-apartment propagation : multi-tenant buildings and unsealed joints.

Recommended professional treatment

An effective protocol against cockroaches combines inspection, professional gel baits, growth regulators (IGR), targeted dry powders in technical voids and monitoring traps. The products used are approved by Health Canada and applied according to a suitable safety plan (children/animals) by certified technicians.

Plan in 2 visits: 1) initial treatment + hygiene advice/sealing; 2) follow-up visit for increase baiting, set/check traps and seal entry points identified.

Prevention and maintenance (checklist)

  • Repair the water leaks and improve ventilation (range hood, fan, dehumidifier).
  • Clean regularly grease and crumbs, empty the trash in the evening, wash the bins.
  • Store food in airtight containers (including pet food).
  • Seal cracks, joints around plumbing, and cable passages.
  • Implement a quarterly monitoring (sticky traps, preventive inspection).

Why choose us

Interventions 24/7, methods safe and sustainable, professional equipment, documented follow-up, and personalized recommendations to prevent reinfestation. Our team covers residential, multi-unit, and commercial properties (restaurants, food industry, warehouses).

Act quickly: The sooner we treat it, the lower the costs and recovery time. Our experts can quickly travel anywhere in the Greater Montreal area.

📞 Phone: 438-835-8401
✉️ Email: extermipro@gmail.com
📝 Express submission: Schedule an appointment online


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Areas served

  • Montréal Ahuntsic, Villeray, Rosemont, Plateau, Outremont, Côte-des-Neiges, NDG, Verdun, Ville-Marie.
  • Laval Chomedey, Sainte-Rose, Fabreville, Laval-des-Rapides, Duvernay.
  • North Shore : Terrebonne, Blainville, Mascouche, Repentigny, Saint-Eustache, Boisbriand.
  • South Shore Longueuil, Brossard, Saint-Hubert, Boucherville, Greenfield Park, Saint-Lambert.
  • West Island Dorval, Pointe-Claire, Beaconsfield, Pierrefonds, Kirkland, D.D.O.