Pavement Ant Control
Toronto & GTA

Pavement ants (Tetramorium immigrans, formerly T. caespitum) are small, dark-brown to black ants measuring 2.5–3 mm in length with a characteristic pair of spines on their thorax and parallel ridges (striations) on their head and thorax visible under magnification. Originally introduced to North America from Europe, they are now the most abundant ant species in urban Toronto, thriving in the compacted, heated soils beneath asphalt driveways, concrete sidewalks, stone patios, and building foundations.

In Toronto's densely built neighbourhoods — from Leslieville and East York to Rexdale and Scarborough — pavement ant colonies are nearly ubiquitous beneath paved surfaces. A single colony can contain 3,000–5,000 workers and multiple queens. These colonies forage along established trails that lead into homes through foundation cracks, weep holes, utility penetrations, and gaps under door thresholds. Once inside, workers recruit more nestmates to food sources in kitchens, under appliances, and in basement storage areas.

Toronto's urban heat island effect creates warm pavement and soil temperatures that allow pavement ant colonies to remain active longer into autumn and resume foraging earlier in spring compared to rural areas. This extended activity window means Toronto residents experience pavement ant intrusions from as early as late March through to late October in mild years, with indoor satellite colonies remaining active year-round in heated structures.

According to Health Canada, pavement ants are among the most common structural pest ants in Canada's urban centres, with populations sustained by abundant food sources in residential kitchens and commercial food-handling areas. While they do not pose direct health risks through stings or bites, their food contamination potential makes them a significant concern in food-service and multi-unit residential settings.

Step 1 — Booking & Scheduling: Call 416-555-5555 or complete our online form to schedule service. We serve all Toronto neighbourhoods and GTA communities seven days a week with flexible morning, afternoon, and evening windows. Same-day appointments are available for urgent infestations.

Step 2 — Interior Trail Inspection: Our technician systematically inspects kitchen cabinets, appliances, baseboards, utility rooms, and basement areas to identify all active foraging trails and any interior satellite nest sites. We trace trails back to primary entry points at the foundation to understand the full scope of the infestation.

Step 3 — Bait Placement: Gel baits are placed at all active trail locations using bait stations that protect the product from children and pets while allowing ant access. We use both protein-based and carbohydrate-based bait formulations because pavement ant preference shifts seasonally — matching bait type to current worker needs dramatically accelerates uptake and colony transfer.

Step 4 — Exterior Perimeter Treatment: A non-repellent residual insecticide is applied around the full perimeter of the building, treating foundation walls, door thresholds, window wells, and all identified crack and crevice locations. This exterior treatment intercepts foraging ants before they enter the structure and works synergistically with the interior bait programme to eliminate colonies from multiple directions.

Step 5 — Client Education & Prevention Guidance: We walk you through the post-treatment process, explain what to expect over the following weeks, and provide specific recommendations for sanitation, exclusion repairs, and moisture management that will reduce ant pressure long-term. A written service report documents all treatment zones, products used, and follow-up scheduling.