Termite Treatment in Markham
Professional termite treatment services in Markham. Licensed, insured, and locally trusted.
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Typical Cost in Markham
$150–$500
Final cost depends on severity, property size, and treatment method.
Markham has two pest realities separated by about 30 years of construction. Walk down Main Street Unionville and the heritage homes there have fieldstone foundations with gaps that mice have been using since before the town had a traffic light. Drive 15 minutes north to Cornell or Box Grove and the brand-new detached homes are already getting mice through settling gaps around gas lines and dryer vents — the foundation shifts in the first two winters and opens up entry points the builder never sealed. The Rouge River cuts through eastern Markham and delivers raccoons, skunks, and squirrels right into the backyards along Rouge River Estates. Milliken is rat territory — the dense mix of restaurants and food businesses along Steeles and McCowan feeds Norway rat populations that burrow under adjacent residential foundations. Angus Glen looks pristine, but the golf course is raccoon habitat and they do not stay on the fairways.
Our Termite Treatment Process in Markham
Inspection
The technician inspects the foundation, basement, crawl spaces, and any wood-to-ground contact for signs of termite activity: mud tubes, wood damage, and live termites. Subterranean termites build mud tubes along foundation walls to maintain moisture while travelling between their colony in the soil and the wood they feed on.
Treatment
If active termites are found, a treatment plan is developed based on the extent of the infestation and the construction type. Options include soil treatment with liquid termiticide applied around the foundation perimeter, or wood injection treatment for localized infestations. Liquid termiticide creates a continuous chemical barrier in the soil.
Prevention
Annual monitoring inspections are the most important part of long-term protection. Most professional treatments include a multi-year warranty with annual inspections that catch new activity before it causes significant damage. Liquid termiticide barriers typically last 5–10 years.
Signs You Need Termite Treatment in Markham
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Mud tubes built along foundation walls, basement floors, or support piers — 6–12mm wide trails of dried mud
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Wood that sounds hollow when tapped — termites eat wood from the inside out, leaving only a thin outer shell
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Small piles of termite droppings (frass) near baseboards, windowsills, or basement walls — looks like fine sawdust or coffee grounds
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Wooden structures that warp, buckle, or show damage without any obvious water leak
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Swarmers (winged termites) emerging from wall voids or around the foundation in spring — often mistaken for flying ants
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Paint that bubbles, peels, or shows water damage that does not match any known leak
Why Hire a Professional in Markham
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Termites cause more property damage in Canada than fires and floods combined. In the GTA, where older housing stock and clay soil create ideal termite conditions, the risk is real and ongoing.
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DIY termite sprays treat the surface, not the colony. Termites live in the soil. Only professional liquid termiticides applied to the soil create a barrier that eliminates the colony and prevents reinfestation.
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Correctly identifying termites versus flying ants is essential — the treatments are completely different. A professional inspection eliminates the guesswork.
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Termite warranties require annual monitoring. Most professional treatments include a multi-year warranty with annual inspections.
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Subterranean termites require soil moisture to survive, which is why they enter homes through foundation cracks and wood-to-ground contact points.
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