Ant Extermination in London, Ontario
Baiting and exterior barrier work to eliminate ant colonies at the source. We tailor the plan to London homes and businesses so you get fast, discreet results.
Foundation, patio, and wall-void treatments for lasting control.
- Avoid spraying over-the-counter products on trails before baiting.
- Trim vegetation touching siding and gutters.
Your ant extermination plan in London
A clear, three-part visit keeps you informed from inspection through prevention.
Inspect & Identify
We verify the pest, map entry points, and look for conditions that let infestations grow.
Treat With Purpose
Targeted applications, sealing, and trapping plans designed for your structure and pest type.
Prevent & Monitor
Follow-ups, monitoring devices, and practical prevention tips keep you ahead of future activity.
Built for London
We factor in your home style, nearby greenspace, and seasonal patterns so treatments last.
- Byron
- Old North
- Masonville
Signs of a ant problem
Noticing these around your London property? Get in touch before it spreads.
Trails of ants along counters, baseboards, or the foundation
Small piles of sawdust near wood, a sign of carpenter ants
Winged ants appearing indoors in spring
Why 401 Pest Control?
Local technicians, clear communication, and proven products.
Qualified + Local
Licensed exterminators and wildlife experts working across Southwestern Ontario with unmarked vehicles available.
Safe For Families
Integrated pest management with low-odour, pet-conscious products and prep checklists that keep you in the loop.
Same-Week Service
Fast dispatch along the 401 corridor, clear ETAs, and tidy work that respects your home or business.
Proof + Prevention
Photos, exclusions, and follow-up scheduling so issues stay gone—not just knocked down once.
Need help with another pest?
We handle every common Ontario pest. Explore other services for London.
Ant Extermination in London: FAQs
Common questions about ant extermination for London homes and businesses.
Why shouldn't I spray ants myself?
Store sprays scatter the colony and can make it split. We bait so workers carry product back to the queen.
Do you treat carpenter ants?
Yes. These damage wood, so we locate the nest and treat the galleries directly.
How long until the ants are gone?
Baiting usually clears a colony within a couple of weeks; large carpenter-ant nests may need a follow-up.
Start ant extermination in London
We provide prep steps, ETA updates, and clear recommendations after each visit.