How to pick a licensed Cornell pest control company: the Ontario licences to check, what Markham and York expect, and the questions to ask.
📞 Get a Free Quote — 905-925-8427Looking for the best pest control in Cornell? The best choice is the company that can show the right Ontario licences, uses Health Canada approved products according to the label, explains its method and puts its warranty in writing. This page adds what Markham and York expect, so you can judge any quote.
Ontario requires an exterminator licence for anyone applying pesticides commercially on property they or their employer do not own, and an operator licence for the business, which needs licensed exterminators and insurance.
| Local source | What it says | What to do with it |
|---|---|---|
| Section 14(1) | A dwelling must be kept free of rodents, vermin and insects at all times, and extermination methods must follow the Pesticides Act. | The owner carries the duty, so owners and landlords should keep records of each visit. |
| York Region Public Health | York Region publishes food premises inspection reports through YorkSafe, so residents can look up the most recent routine and complaint inspections of restaurants. | Businesses can look up their own record before and after a treatment. |
| Landlord and Tenant Board | The Landlord and Tenant Board says a landlord must take steps to control pests such as cockroaches and mice and meet the standards set out in municipal by-laws. | Tenants and landlords should keep the pest company's visit records. |
| When | What was reported | Source |
|---|---|---|
| Ongoing | YorkSafe lists the results of public health inspections of restaurants and other food premises over the past two years, so you can check a premises' record. | York Region: YorkSafe inspection results |
Paraphrased from the linked sources. Counts are as reported on the date shown.
| Page | Distance from Cornell | Direction |
|---|---|---|
| Best pest control Berczy Village | 4 km | west |
| Best pest control Wismer | 4 km | northwest |
| Best pest control Unionville | 7 km | west |
| Best pest control Markham | 10 km | west |
| Best pest control Cathedraltown | 10 km | west |
| Best pest control Whitchurch-Stouffville | 10 km | north |
Straight-line distances between area centres, rounded.
Cornell is part of Markham, so these are Markham figures. 56% of homes in Markham are detached, 23% are apartments and 19% of households rent, so the right company asks what kind of building you live in before it recommends a treatment, because the plan for a detached home is not the plan for a shared building.
Source: Statistics Canada, 2021 Census, private households in Markham. Shares of occupied private dwellings.
Source: Statistics Canada, 2021 Census, private households in Markham. Shares of occupied private dwellings.
| If you need help with | What the local source says | What to ask the company |
|---|---|---|
| Mosquitoes | As of September 3, 2026, York reported 14 West Nile positive mosquito traps: East Gwillimbury 2, Markham 4, Newmarket 2, Richmond Hill 1, Vaughan 4 and Whitchurch-Stouffville 1, plus one confirmed and one probable human case in Vaughan. | What do you do on standing water the public program cannot reach? |
| Ticks | York says the risk of getting Lyme disease from a tick bite increases with the time a tick is attached and usually requires the tick to be attached for 24 hours or more. | Do you treat the yard edges and perimeter, and how long does it last? |
| Ask | A good answer sounds like |
|---|---|
| Can I see the operator and exterminator licences? | Licence numbers for the business and the technician. |
| What is the plan and the follow-up schedule? | Steps, a preparation list and follow-up dates. |
| What does the warranty cover, in writing? | Days, pests covered and what happens if pests return. |
| Checklist item | AstraHive Pest Control |
|---|---|
| Licensing | Our technicians are licensed by the Ontario Ministry of the Environment, Conservation and Parks (MECP). Ask us for the licence details when you book. |
| Products | Health Canada approved products, applied according to the product label. |
| Method | Inspection first, then the method for your pest, with a follow-up visit. |
| Warranty | A 90-day warranty on treatments, and 30 days on wasp and hornet nest work. |
| Track record | Our customers have left 200+ 5-star reviews. |
Our other Cornell pages and nearby areas:
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