Licensed & insured Local service
Professional Ant Extermination
Baiting and exterior barrier work to eliminate ant colonies at the source.
Serving Southwestern Ontario and the 401 corridor.
- Inspection includedIdentify activity and treatment areas with your booked service.
- Service tailored to your propertyFoundation, patio, and wall-void treatments for lasting control.
- Clear follow-up planKnow what to expect after your visit.
Free quote. No obligation to book.
Your quote confirms the price, service scope and follow-up arrangements. Inspection is included with booked service.
Signs of ant activity
Know what to look for and contact us to discuss the next step.
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
Ant species found in Ontario
Identification changes the treatment. These guides cover the species, breeding and hiding places.
Carpenter Ants
Large ants and sawdust-like debris can point to a nesting problem, but the nest may be somewhere other than the room where you see workers.
Identification guide →
Pavement Ants
Small dark ants entering at floor level may be travelling from a nest beneath a slab, rather than living in the cupboard where they find food.
Identification guide →Pharaoh Ants
With pharaoh ants, the visible trail may be only a small part of a hidden, multi-queen infestation. Identifying them before choosing treatment is especially important.
Identification guide →Odorous House Ants
These small brown or black ants can nest outdoors or in walls and under floors. The location of a food trail does not by itself locate the nest.
Identification guide →Before your visit
A quick checklist to discuss with your technician.
Why choose 401 Pest Control for Ant Extermination?
Owner-operated service from a licensed exterminator, with clear preparation instructions and follow-up terms.
Owner-operated service
Wick is the licensed exterminator who personally performs your treatment. Speak directly with the person doing the work.
Clear treatment guidance
Preparation and re-entry instructions are specific to the treatment, product label, and your household.
Local service across our region
Pest control and wildlife removal across Southwestern Ontario and the 401 corridor. Share your city or postal code to confirm scheduling.
Follow-up explained
Wasp and hornet nest removal includes a 3-month warranty. Cockroach treatment includes free follow-up re-treatment. Full terms are confirmed before booking.
How we treat ant extermination
Your quote explains the treatment scope, preparation and follow-up for your property.
Identify the activity
Inspect visible trails and affected areas before choosing the treatment.
Apply targeted treatment
Use the agreed bait or pesticide treatment according to the product label.
Explain aftercare
Provide cleaning, preparation, and re-entry instructions and confirm any follow-up terms.
Focus areas
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.
Where we handle Ant Extermination
Serving Southwestern Ontario and the 401 corridor. Choose your city for local information and confirm scheduling for your address.
Helpful Ant Extermination guides
Learn what to look for and when professional treatment makes sense.
Ant Extermination FAQs
Common questions about ant extermination in Southwestern Ontario.
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.