Ontario's pest control trade is busiest where the people are. Brampton, Mississauga, Scarborough, Toronto, Hamilton and North York each have more than 35 companies on this directory, and most of them work across the whole Greater Toronto and Hamilton Area rather than one city. Ottawa, London, Barrie, St. Catharines and Windsor anchor their own regions. Further north and east, a single company often covers a wide stretch of towns, cottages and lakes.
Every city below has its own page with the companies that work there, what they treat and how their customers rate them. Smaller towns that sit far from a larger city have a page of their own too, listed after the cities. If your town is not here, pick the nearest city: most companies on this directory travel well past their own address.
In Ontario, anyone who applies pesticides as an exterminator needs a licence from the Ministry of the Environment, Conservation and Parks, and a business that does the work for pay needs an operator licence. Ask the company you call for its licence number.
Featured pest control companies in Ontario
What a featured listing costs · from $29 CAD a month
All cities
- Ajax 5
- Amherstburg 3
- Ancaster 6
- Aurora 5
- Bancroft 4
- Barrie 24
- Belle River 5
- Belleville 12
- Bowmanville 5
- Bradford 14
- Brampton 56
- Brantford 16
- Burlington 12
- Cambridge 15
- Chatham 9
- Collingwood 10
- Concord 10
- Cornwall 4
- East York 9
- Etobicoke 19
- Greater Sudbury 9
- Guelph 6
- Hamilton 37
- Keswick 5
- Kingston 4
- Kitchener 13
- Leamington 4
- Lindsay 6
- London 31
- Maple 8
- Markham 8
- Milton 11
- Mississauga 46
- Nepean 12
- Newmarket 8
- North Bay 8
- North York 36
- Oakville 10
- Orangeville 6
- Orillia 10
- Orléans 6
- Oshawa 11
- Ottawa 33
- Owen Sound 5
- Perth 6
- Peterborough 13
- Pickering 10
- Richmond Hill 12
- Sarnia 7
- Sault Ste. Marie 3
- Scarborough 42
- South Frontenac 4
- St Thomas 6
- St. Catharines 23
- Stoney Creek 7
- Thornhill 3
- Thunder Bay 4
- Toronto 40
- Vaughan 6
- Waterloo 8
- Whitby 5
- Windsor 20
- Woodbridge 10
- Woodstock 6
- York 5
Smaller towns
These towns have fewer than 3 listed pest control companies and are too far from a larger city to share its page.
- Alfred 1
- Alvinston 1
- Augusta 1
- Baysville 1
- Blind River 1
- Bracebridge 1
- Braeside 1
- Brockville 2
- Colborne 1
- Elliot Lake 1
- Goderich 1
- Grand Bend 1
- Grey Highlands 1
- Huntsville 1
- McNab/Braeside 1
- Minden 1
- Monteith 1
- Muskoka Lakes 1
- Port Dover 1
- Port Rowan 1
- Prescott 2
- Seguin 1
- South Dundas 1
- The Archipelago 1
- Thedford 1
- Timmins 1
- West Grey 1
Frequently asked questions
How many pest control companies are listed in Ontario?
845 at the last update on 2026-10-13, across 65 cities. Cities with fewer than 3 listed businesses are folded into the nearest city page.
Which Ontario city has the most pest control companies?
Brampton, with 56 listed. Mississauga is next with 46.
Can I be listed here?
If you run a pest control company business in Ontario and are not listed, use the claim form and we will check the details and add you. Basic listings are free.