Ant Exterminator Cost in Canada: Typical Prices and What Changes Your Quote

TL;DR

• A standard ant treatment in Canada usually costs $150 to $500. A one-time interior treatment for common household ants is typically $150 to $300.
• Carpenter ants cost the most to treat, at $300 to $800, and severe cases can cost more.
• Other species: pharaoh ants $200 to $350, pavement ants and odorous house ants $150 to $250, fire ants $300 to $500.
• Check what is extra: an inspection runs from free to $75, a follow-up visit $50 to $100 and an exterior perimeter spray $100 to $200.
• The price rises with the size of the colony, the size of your home, your city, the season and the method. Labour is often most of a quote.
• Need help? Get a quote from a recommended local exterminator through Pest Agent's referral form.

Ant exterminator cost in Canada usually runs $150 to $500 for a standard treatment, according to the HomeStars 2026 price guide, yet two quotes for the same trail of ants across a kitchen counter can still land far apart. Comparing them on the total alone hides what each visit actually includes.

Pest Agent does not set prices or treat homes: the ranges on this page come from a Canadian quote marketplace and from Canadian pest control companies. Much of the gap between quotes comes from what each one bundles, since an inspection fee, a follow-up visit, an exterior spray or a full season of protection is priced as a separate line.

How Much Does an Ant Exterminator Cost in Canada?

An ant exterminator cost in Canada usually falls between $150 and $500 for a standard treatment, according to HomeStars, a Canadian marketplace that collects quotes from local pest control companies. That range covers most common household ants. Carpenter ant removal is listed separately, at $300 to $800, and severe cases can go higher. Here is how the cost of an ant exterminator breaks down by service.

One-Time Interior Treatment

A one-time interior treatment for common household ants typically costs $150 to $300, according to HomeStars. This is the visit most homeowners book when ants trail across a kitchen counter or bathroom floor. A standard treatment typically takes about one to three hours depending on the size of the home, and usually combines gel baits, dusts or spot sprays placed where the ants travel and hide.

Inspection Fee

An inspection fee ranges from free to $75, according to HomeStars. Many companies inspect for free or credit the fee to the job: NS Pest Control in Halifax, for example, charges $50 plus tax for the inspection and builds it into the total treatment price. The inspection is where the technician identifies the species, finds trails and entry points and gives you a firm scope, so it is worth having even when it is not free.

Follow-Up Visits

A follow-up visit costs $50 to $100, according to HomeStars. Some ants, carpenter ants in particular, often need a return visit, and pharaoh ants usually need several weeks of baiting with monitoring. Ask whether follow-ups are included in the quoted price or billed separately, because that difference alone can change which quote is cheaper.

Exterior Perimeter Spray

An exterior perimeter spray costs $100 to $200, according to HomeStars. The technician sprays around the foundation and entry points to stop ants before they get inside. It is a common add-on, but UC IPM advises asking a pest control company to use baits and spot treatments rather than perimeter treatments or monthly sprays, since sprays only provide temporary control. If a quote is mostly perimeter spraying, ask why baits are not part of the plan.

Annual Protection Plans

An annual protection plan costs $400 to $600 per year, according to HomeStars. Plans include scheduled treatments through the season and tend to be more economical than repeated one-off visits when ants return to your property every spring. If you have ants once and they never come back, a single treatment is usually enough.

Prices From Canadian Companies

Prices from Canadian companies line up with the HomeStars ranges. Pesticon, in Ontario, says most residential ant treatments range between $150 and $300. NS Pest Control says its residential and commercial ant treatments start at $150 and go up with the size of the building and the level of infestation. Large national companies such as Orkin Canada and Terminix Canada generally publish no ant prices and give a free estimate after an inspection instead.

For a price for your home, you can get a quote from a recommended local exterminator through Pest Agent's referral form and check it against the ranges above.

How Does the Ant Species Change the Cost?

The ant species changes the cost more than anything else, because each species nests differently and needs a different method. HomeStars notes that many companies identify the species during a free or low-cost inspection before recommending a treatment. Here is how the main species found in Canadian homes compare.

Carpenter Ants

Carpenter ants are the most expensive ants to treat, at $300 to $800 according to HomeStars, and severe cases with several satellite colonies can cost more. Health Canada explains that carpenter ants can nest in damp or decaying wood, including wall voids, attics and hollow doors, and that a well-established colony often requires locating and treating the actual nest. That often means drilling small holes and injecting insecticide or dust into the galleries, usually followed by a return visit about two to three weeks later. Signs such as sawdust-like debris or a dry rustling sound in the walls are covered in our guide to signs of carpenter ants in the house, and what the service involves is explained in carpenter ant pest control.

Pharaoh Ants

Pharaoh ant treatment typically costs $200 to $350 and takes four to eight weeks to resolve, according to HomeStars. The price reflects time rather than product: sprays can make pharaoh ant colonies split into new nests (Alberta Health), so the most reliable approach is usually a baiting program with setup and monitoring over several weeks. In apartment buildings, the whole building may need treatment. Our guide to pharaoh ants explains why baiting works.

Pavement Ants

Pavement ant treatment usually costs $150 to $250, according to HomeStars. Pavement ants often nest in cracks in driveways, foundations and sidewalks, so a perimeter treatment around the house is often enough. They are generally one of the simplest ants to treat.

Odorous House Ants

Odorous house ant treatment usually costs $150 to $250, according to HomeStars. These ants are common across Canada and are drawn to sweets and moisture, and treatment is usually uncomplicated. A bait-based treatment is usually the better choice indoors, since sprays can split ant colonies.

Fire Ants

Fire ant treatment costs $300 to $500, according to HomeStars, depending on the number of mounds and the size of the colony. In Canada, the main concern is the European fire ant, a stinging species that reportedly arrived in British Columbia around 2010. The Invasive Species Council of BC advises against trying to remove a nest yourself and asks that you not move soil, turf or leaf litter off your property. Read more about getting rid of fire ants.

What Factors Affect Ant Pest Control Cost?

Ant pest control cost rises with the size of the colony, the size of your home, your city, the season and the method used. Two homes with the same species can get very different quotes, so it helps to know what the technician is pricing.

Infestation Size

Infestation size is the first factor after the species. A short trail of ants along a counter is a quick job. A colony established inside wall cavities, under a slab or in the roof structure needs more product, more time on site and often several visits, which is how a $150 job becomes a $500 one.

Property Size

Property size affects the price because labour is most of the bill. A two-bedroom condo takes far less time than a detached house with a crawl space and landscaping around the foundation, and hard-to-reach nesting areas add time to any job. Pesticon notes that the accessibility of nesting areas can be a cost factor for carpenter ants.

Location

Location changes the labour rate. HomeStars gives the example of an ant treatment costing $175 in a Prairie city and $250 to $300 in Toronto or Vancouver. Companies may also add travel fees in suburban or rural areas, and NS Pest Control says it charges travel outside its service area.

Season

Season matters because ant activity and demand for pest control both tend to peak between April and September, according to HomeStars. Booking a preventive treatment in early spring or late fall often costs less. An active ant infestation inside the house, on the other hand, costs roughly the same to treat at any time of year.

Treatment Method

Treatment method sets the price range: from about $100 for a basic perimeter spray to $800 or more for carpenter ant wall injection, according to HomeStars. Baiting programs cost more in time because they need monitoring over several weeks. Fumigation is almost never used for ants in Canada and is not required for any species commonly found in Canadian homes, so a fumigation quote for ants deserves a detailed explanation. To understand the products behind each method, see what professionals use to kill ants.

What Is Included in an Ant Exterminator Quote?

An ant exterminator quote is often mostly labour, about 60 to 70% of the price according to HomeStars. Knowing the parts of a quote makes it easier to compare companies and to spot what is missing.

Labour

Labour covers the time a technician spends inspecting your home, finding entry points, applying the treatment and setting up monitoring. This is why the size of your home and access to the nest move the price more than the products do.

Materials

Materials are a small part of the bill, typically $20 to $60 for the baits, dusts, sprays or granules used, according to HomeStars. Lower-toxicity products are available at a slight premium and are worth discussing if you have young children or pets.

Equipment

Equipment rarely adds to a standard ant job. For carpenter ants, inspection cameras (borescopes) and drill-and-inject tools can add $50 to $150, according to HomeStars.

Warranty

A warranty tells you what happens if the ants come back. Terms differ a lot between companies: Pesticon says it offers free re-treatment within 100 days, Peregrine Pest Control in Calgary says it returns at no extra charge within 90 days, and NS Pest Control says it gives a three-month guarantee on the inside of the home. Orkin Canada says it provides re-treatment at no extra cost but requires you to follow its sanitation and structural recommendations and allow scheduled follow-ups. Ask for the warranty length and conditions in writing.

Written Contract

A written contract protects you when prices or results are disputed. Quebec's guide to hiring a pest management company says the contract should state the nature of the work, the exact product names with their registration numbers and the areas to be treated. In Ontario, companies that apply pesticides need a provincial exterminator or operator licence, which you can look up. HomeStars also advises asking each company to name the species and the method, because quotes based on different methods are not directly comparable. For what to look for in a company, see our guide to ant pest control.

Home Insurance

Home insurance usually does not pay for ant extermination. According to HomeStars, standard home insurance policies often exclude insect infestations, including carpenter ants, although some policies may cover structural repairs in specific cases. Check your own policy with your insurer before assuming either way. Before the technician arrives, a little preparation for the ant exterminator helps the visit go faster.

How Can You Lower the Cost of Ant Extermination?

The cost of ant extermination drops when you treat early, compare like-for-like quotes and remove what attracts the ants in the first place.

Act Early

Acting early is the simplest way to save. Small colonies cost less to treat, so calling a professional at the first sign of ants that keep coming back is usually cheaper than waiting until the colony has moved into the walls.

Comparing Quotes

Comparing two or three quotes is standard practice, according to HomeStars. Describe the species if you know it and every room where you have seen ants, so each company prices the same scope. Then compare the method, the number of visits, the follow-up price and the warranty, not only the total.

Moisture Repairs

Moisture repairs cut the risk of paying twice. Health Canada notes that carpenter ants indoors can point to moisture or decaying wood, and advises correcting humidity problems and replacing decaying wood. Fixing a leaking pipe or a rotted board removes what attracted the colony, so it is less likely to return after treatment.

DIY Baits First

DIY baits are worth trying first for small sugar-loving ants. Pesticon puts store-bought sprays and baits at $20 to $100. Health Canada recommends keeping baits available for at least two weeks, using two different baits at once, placing them out of reach of children and pets, and not spraying while you bait, since sprays can split the colony. Choose products with a Pest Control Products (PCP) number on the label. Our guide on how to get rid of ants walks you through it. Carpenter ants, pharaoh ants and fire ants are better left to a licensed professional.

Seasonal Plans

Seasonal plans make sense only when ants return every year. HomeStars notes that a scheduled prevention plan, at $400 to $600 per year, is often cheaper over two or three seasons than repeated one-off visits. For more on ants in general, visit the ant hub.