Pest Control and Extermination in Scarborough, Ontario
Cockroaches, mice, raccoons, and rats are persistent pest challenges across Scarborough's residential and commercial properties. The district carries two very distinct pest environments. Older high-rise and mid-rise apartment buildings — many built between the 1960s and 1980s — face chronic German cockroach pressure, with infestations spreading freely between units through aging shared infrastructure. At the same time, Scarborough's established suburban neighbourhoods: post-war bungalows and semi-detached homes along Kingston Road, Lawrence Avenue East, and Ellesmere — face consistent rodent pressure each fall from outdoor populations near aging foundation gaps.
The Rouge River, Highland Creek, and their associated ravines create active wildlife corridors through Scarborough's eastern and northeastern areas. Raccoons, skunks, and foxes move through these corridors year-round. Properties backing onto ravines or near the Rouge Valley see consistent wildlife activity in every season regardless of the time of year.

Common Pest Problems in Scarborough
Cockroach Extermination
German cockroach infestations are the most demanding pest challenge in Scarborough's older apartment and condominium stock. These buildings have extensive shared infrastructure — plumbing stacks, service corridors, conduit runs, and wall cavities — that allow cockroaches to move between units once established. A visible cockroach in a kitchen rarely represents the full scope of the infestation; the majority of the population is concealed in harborage sites inside cabinetry, behind appliances, under sinks, and in crack-and-crevice locations throughout the affected units.
Professional gel baiting is the only effective treatment for German cockroaches. Surface sprays scatter the population without eliminating it and the infestation rebounds rapidly. Our cockroach extermination service uses professional-grade gel bait applied directly at all active harborage sites, with a follow-up visit to confirm complete elimination.
Rodent Control
Mice and occasional rat activity affect both residential and commercial properties across Scarborough. The district's older housing stock has accumulated structural gaps — settling foundations, older pipe penetrations, and deteriorated building envelope details — that give rodents multiple entry options. Norway rats are a management concern around commercial food facilities and restaurant clusters along Kingston Road and Sheppard Avenue East. Our mice control service includes full inspection, interior trapping, exterior bait stations, and complete structural exclusion. We also provide dedicated rat extermination programs for commercial properties.
Wildlife Removal
Raccoons are active across all of Scarborough, with the highest pressure near the Rouge River, Highland Creek, and the ravine systems. They access attics through aging soffits, broken vents, and weak roofline edges. Skunks den under decks and porches in Scarborough's suburban areas. Our wildlife removal service provides humane one-way removal and permanent steel mesh exclusion at all entry points. See our dedicated pages for raccoon removal, squirrel removal, and skunk removal.
Ant Control
Pavement ants and carpenter ants are both active in Scarborough. Carpenter ants are particularly prevalent in properties with mature trees near the wooded ravine corridors — they nest in dead wood along the ravine edges and forage into adjacent homes. Our ant control and carpenter ant control services target and eliminate the full colony at source.
Wasp Nest Removal
Yellow jacket and paper wasp nests appear on Scarborough homes and commercial properties from May through September. Nests in wall voids, under soffits, and in underground locations are common, especially in older homes along Kingston Road and Lawrence Avenue East. Our wasp nest removal service is available same-day during peak season.
Areas We Serve in Scarborough
We service all Scarborough communities, from the Scarborough Bluffs waterfront to the Rouge Valley in the north and east. Pest activity varies across the district — cockroach pressure is highest in the apartment corridors along Kingston Road and Lawrence Avenue East, while wildlife pressure is highest near the Rouge River and Highland Creek.
- Scarborough Village and Cliffside
- Birchcliffe and Cliffcrest
- Agincourt and Tam O'Shanter
- Woburn and Cedarbrae
- Wexford and Maryvale
- Dorset Park and Ionview
- Morningside and West Hill
- Malvern and Rouge
- Highland Creek and Port Union
- Eglinton East and Kennedy Park
Seasonal Pest Control in Scarborough
Spring (March–May)
Female raccoons begin searching for denning sites in Scarborough attics from March. Squirrels follow similar patterns with peak entry attempts in early spring. Carpenter ants re-activate in May in the ravine-adjacent neighbourhoods. Wasp queens begin establishing new colonies in May under eaves and in wall voids.
Summer (June–August)
Wasp nests grow rapidly through summer and reach peak size by August, becoming highly aggressive near the end of the season. Ant activity is at its highest across all Scarborough neighbourhoods. Fruit flies, drain flies, and other filth insects become management challenges in Scarborough's restaurant and food service businesses.
Fall (September–November)
Fall is the critical mouse infiltration season across Scarborough. Mice from the Rouge Valley and Highland Creek corridors push into adjacent residential properties as temperatures drop. Rodent activity in apartments and multi-unit buildings increases as residents spend more time indoors. October is the most important month to address exclusion work.
Winter (December–February)
Mice and cockroaches remain active year-round inside structures. Winter is an effective treatment window for both — mice are concentrated indoors and the absence of outdoor activity makes interior bait stations highly productive. Cockroach spread through apartment buildings continues through all seasons.
Commercial Pest Control in Scarborough
Scarborough has a significant commercial sector along Kingston Road, Lawrence Avenue East, Sheppard Avenue East, and the McCowan Road corridor. We provide commercial pest management programs for restaurants, retail plazas, food processing facilities, and multi-unit residential buildings. Programs include scheduled visits, exterior bait station maintenance, and full service documentation for health and safety compliance. Learn more about our commercial pest control services.
Why Choose Pest Control ON in Scarborough
Multi-Unit Building Expertise
Proven cockroach and rodent programs for apartment buildings and condominiums. We coordinate with property managers across multiple units.
Rouge Valley Wildlife Knowledge
We understand the raccoon and wildlife patterns driven by the Rouge River and Highland Creek corridors unique to Scarborough.
Full Structural Exclusion
Every rodent service includes sealing all identified entry points — we don't just trap, we prevent re-entry.
Satisfaction Guarantee
All residential and commercial services come with a guarantee. If pests return, we return and re-treat at no additional cost.
