Choosing the right exterminator for rat infestations in Montreal
A rat infestation in a home or business is more than a nuisance: rats contaminate food, spread disease and gnaw on structures, wiring and insulation. In Montreal, the extensive sewer network, older buildings and urban density give them an ideal habitat, and the problem comes back quickly if it is not handled properly. Choosing the right rat exterminator is what separates a temporary fix from a lasting solution. Here is what to check, what to ask and which red flags to watch for.
1. Check the permit and certification
In Quebec, pesticide use is governed by the Pesticides Act and the Pesticides Management Code. Two separate documents apply to an extermination company:
- The company permit. Any business that applies pesticides for pest management must hold a permit for that activity, valid for three years.
- The technician’s certificate. Anyone applying pesticides for pest management must hold a Subclass CD5 certificate or work under the supervision of a certificate holder. Certificates are valid for five years, and renewing a CD5 certificate now requires accredited continuing education.
Feel free to ask for the company’s permit number and to confirm that the technician coming to your home is certified. Membership in a professional association such as the Association québécoise de la gestion parasitaire (AQGP) is not mandatory, but it is a good sign: members commit to a code of ethics and have access to ongoing training.
| Requirement | What to know |
|---|---|
| Company permit | Required to apply pesticides for pest management; valid three years |
| CD5 certificate | Required for the technician (or supervision by a holder); valid five years |
| Continuing education | Required to renew the CD5 certificate |
| Professional association | Optional, but a sign of standards and training |
2. Look for experience with rats
Rats are not like other pests. Wary of anything new, they can avoid a trap for days; they live in colonies, follow the same routes and often come in through drains and foundations. An experienced exterminator knows how to find entry points, nests and food sources and adapts the approach accordingly.
Ask concrete questions:
- How long has the company been in business, and how many rat infestations does it handle?
- What training do its technicians receive?
- Is it familiar with Montreal-specific issues: rats coming up from the sewers, stone or brick buildings, multi-unit housing?
A technician who knows the city will, for example, expect rats to use the sewer system to get into buildings and will check drains and backwater valves. We explain that link in our article on rats and your drains.
3. Check their reputation
Ask friends, neighbours or colleagues who have dealt with a similar problem. Read online reviews for their content, not just the rating: a comment describing how the technician sealed entry points or followed up says more than a star. Testimonials and examples of comparable jobs (multi-unit buildings, food businesses, older homes) show how the company handles difficult cases.
4. Understand the proposed methods
Ask the exterminator to explain what they plan to do and why. A good company favours integrated pest management (IPM), which combines several methods and reduces chemical use:
- Inspection: finding entry points, burrows, nests and the extent of the infestation before treating.
- Trapping: mechanical traps sized for rats, placed on their runways and set with their wariness in mind.
- Baiting: rodenticides used only in locked, tamper-resistant bait stations, in line with regulations, so children, pets and wildlife cannot reach them.
- Exclusion: sealing openings with durable materials (steel wool, metal mesh, sheet metal), installing screens and vent covers, checking backwater valves and trimming branches that give access to the roof.
- Sanitation: advice on food storage, garbage, compost and clutter.
For more on the options, read our article on mousetraps or rodenticides: which to choose.
5. Insist on safe practices
Rat control often involves products that are hazardous to people and animals. Ask what will be done to protect your family, employees, customers and pets. The technician should wear proper protective equipment, place rodenticides only in secured stations and give you clear instructions: areas to avoid, ventilation, not touching traps, keeping children and pets away. If the environment is a concern, ask which options rely more on exclusion and trapping.
6. Compare prices and guarantees
Get several quotes and compare what they include: inspection, number of visits, exclusion work, follow-up. Price depends on the size of the property, the extent of the infestation, the type of treatment and how many visits are needed. For rodents, expect to pay between $200 and $900; see the breakdown in our article on how much an exterminator costs. Be wary of a price that seems too good to be true: it often means an incomplete service with no exclusion or follow-up.
Ask about the guarantee. A reputable exterminator comes back to treat again at no extra charge during the coverage period if the infestation is not eliminated. Read the conditions: duration, pests covered and anything you must do, such as sealing an opening or fixing a drain problem.
7. Judge communication and professionalism
A good exterminator is punctual, answers your questions clearly, proposes a detailed plan and keeps you informed at every step. They provide a written report of each visit: products used, trap and station locations, recommendations. You can often gauge their professionalism from the first call.
Red flags
- no permit or certificate, or a refusal to show them;
- a one-shot “miracle” treatment with no inspection or follow-up;
- bait left out in the open instead of in secured stations;
- no advice on sealing entry points;
- pressure to sign on the spot or prepay a long contract.
Frequently asked questions
What qualifications should a rat exterminator have in Quebec?
The company must hold a permit for applying pesticides in pest management, and the technician a Subclass CD5 certificate (or work under a holder’s supervision). AQGP membership is a plus.
How much does rat extermination cost in Montreal?
For rodents, it typically runs between $200 and $900, depending on the size of the property, the extent of the infestation, the type of treatment and the number of visits. Our article on the cost of an exterminator has the details.
How many visits does it take to get rid of rats?
It depends on the infestation. A small problem may be solved in one visit plus a follow-up, while an established colony or rats coming in from the sewers need several visits, exclusion work and sometimes plumbing repairs.
Are rodenticides dangerous for my children and pets?
They can be, which is why a professional places them only in locked bait stations out of reach. Always ask where stations will be installed and what precautions to take.
How can I tell whether it is a rat or a mouse?
A rat is much bigger, with a blunt snout and a thick tail shorter than its body; its droppings are large and capsule-shaped. See our guide on how to tell the difference between a rat and a mouse.
Need a rat exterminator?
Our technicians work across Greater Montreal, from Laval to Longueuil. Learn about our rat extermination service, read our article on rat infestations in Montreal, call us at 514-677-7526 or request a quote.
