Pavement ants in your home are one of the most common pest problems in BC. They trail in large numbers across kitchen floors and counters, nest under concrete and foundations, and are notoriously difficult to eliminate with consumer products. This guide covers how to identify, prevent, and control pavement ant infestations in BC homes.
Identifying Pavement Ants in Your BC Home
Pavement ants are small (2–3mm), dark brown to black ants with lighter legs. They’re most commonly seen trailing in large numbers along kitchen baseboards and counters, especially in spring and summer. Outside, you’ll often find their characteristic sand mounds pushed up through cracks in driveways and patios — the excavated soil from their underground nesting.
How to Prevent Pavement Ant Infestations
Seal entry points: Caulk cracks in the foundation, around pipe penetrations, and under exterior doors. This is the single most effective long-term prevention measure.
Eliminate food sources: Store food in airtight containers, clean up crumbs and spills immediately, and keep outdoor garbage bins sealed and away from the building.
Reduce moisture: Fix leaking pipes and ensure proper drainage away from the foundation. Moist soil near the building creates ideal pavement ant nesting conditions.
Remove harborage: Keep firewood, stones, and bricks away from the foundation. These create shelter for pavement ant colonies right at your building perimeter.
How to Control Pavement Ants
Gel bait (most effective): Slow-acting gel bait placed along active ant trails allows workers to carry it back to the colony, poisoning the queen within 7-14 days. This achieves full colony elimination rather than just killing foraging workers. Do not spray insecticide alongside bait — it repels ants from the stations.
Perimeter treatment: Residual insecticide applied along the foundation by a licensed technician kills foraging workers and prevents new ones from entering.
Why DIY Pavement Ant Control Often Fails
Consumer sprays kill ants on contact but have no effect on the queen underground. The colony simply produces replacement workers. Many BC homeowners spray repeatedly for months with no lasting result. Professional treatment targets the colony at the source.
Top Line Pest Control provides professional pavement ant and carpenter ant control across BC. Learn about ant control in BC or contact us today for a free assessment.