Ant Control in the GTA: Identify the Species

Seeing ants in your kitchen or around your GTA home? Get free quotes from licensed pest control operators who know how to treat ant infestations properly.

The first step in getting rid of ants is knowing what kind you have. Three species cause most GTA ant problems, and each requires a different treatment strategy. Spraying the wrong product or targeting the wrong location will not solve the problem.

Three Common GTA Ant Species

Carpenter Ants are the most serious. They are the largest ant species in Ontario, up to 2.5 cm long, and are black (some have reddish-brown thoraxes). They excavate wood to build their nests, making them a genuine structural threat. They are most active in spring and summer. Look for small piles of sawdust-like material near baseboards, windowsills, and door frames. You may also hear faint rustling sounds inside walls at night.

Pavement Ants are small, dark brown to black, and nest under concrete slabs, between paving stones, and in foundation cracks. They enter homes through gaps around pipes and wires. Pavement ants are not destructive, but they are persistent and difficult to eliminate without professional products.

Odorous House Ants are small, brown, and get their name from the coconut or rotten peanut butter smell they produce when crushed. They nest in wall voids, behind tiles, and under insulation. In condos, they commonly travel through electrical outlets between units.

What Attracts Ants Into Your Home

• Food sources. Sugary foods, pet food, fruit, and crumbs. Ants can detect food sources from remarkable distances using pheromone trails.
• Water sources. Leaky pipes, condensation under sinks, and pet water bowls. Like all living things, ants need water.
• Entry points. Gaps around windows, doors, pipes, and electrical conduits. Most ants can fit through openings as small as 2 mm.
• Vegetation near the foundation. Tree branches and shrubs touching the house provide an easy highway for ants to reach the exterior wall.

What You Can Do First

• Wipe down kitchen counters and sweep floors daily
• Store food in sealed containers (not just closed bags)
• Fix leaky taps and wipe up standing water under sinks
• Seal visible ant entry points with caulk
• Move firewood at least 20 feet from the house
• Trim vegetation back from the foundation

When to Call a Professional

Call a licensed operator if:

• You see ants inside after attempting basic sanitation
• You see winged carpenter ants (swarmers) inside your home, especially in spring
• You find frass (sawdust-like material) near wooden structures
• You live in a condo and ants keep returning despite your efforts
• You hear sounds inside walls

How Professionals Treat Ant Infestations

1. Inspection. The technician identifies the species, locates entry points, and finds the nest if possible.
2. Targeted gel bait placement. Professional-grade gel baits are applied in cracks, crevices, and along ant trails. The bait contains a slow-acting insecticide that the ants carry back to the colony.
3. Residual barrier treatment. A perimeter application around the exterior foundation creates a barrier that prevents ants from re-entering.
4. Follow-up visits. At least one follow-up visit 2 to 3 weeks later to confirm the colony has been eliminated.

Cost of Professional Treatment

• Pavement ant or odorous house ant treatment: $175 to $300
• Carpenter ant treatment: $300 to $600
• Full perimeter treatment (indoor and outdoor): $300 to $500
• Annual maintenance contract: $200 to $400 per year

Frequently Asked Questions

What types of ants are common in GTA homes?

The three most common ant species in GTA homes are carpenter ants, pavement ants, and odorous house ants. Each requires a different approach. Carpenter ants are the most destructive.

Are carpenter ants dangerous to my home?

Carpenter ants excavate wood to build nests. Over time, this can compromise structural integrity, especially in older GTA homes with solid wood construction.

Why are there ants in my kitchen GTA?

Ants enter homes searching for food, particularly sweet and protein-based foods. In GTA condos, they travel through shared wall voids from neighbouring units.

Does ant gel bait actually work?

Professional ant gel baits are highly effective when correctly placed. The foraging ant carries the bait back to the colony, eventually eliminating the queen.

How much does professional ant treatment cost in Toronto?

Interior treatment for a typical GTA home runs $175 to $300. Carpenter ant treatment costs $300 to $600.

Have an ant problem in your GTA home? Get free quotes from licensed ant control operators today.