Best Pest Control Services near Thornhill, ON
1 of these companies is based in Thornhill; the others serve Thornhill from towns including Etobicoke, North York and Scarborough.
23 open 24/7 · all 24 open weekends · 22 rated 4.5+ · 10 show a licence
Data verified October 18, 2026
Bugs Heat Terminator
Smite A Mite
GTA Exterminators
TSR Pest Control and Wildlife Removal Toronto
Pesticon Pest Control Inc.
Listed for homeowners in and around Thornhill, ON, these 24 companies handle insect and rodent problems in homes. The species each company treats, its licensing claims and hours are taken from its own site, with ratings and quoted comments from public reviews.

Area overview: Thornhill, ON
The 24 companies on this page are rated from 4.0 to 5.0 across 8,198 reviews; 23 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (91%), responsiveness (85%) and quality (79%). The topics that come up most in reviews of the companies on this page are "price" and "efficient". 23 are open around the clock and all 24 are open on weekends. The services the companies on this page list most often on their websites are ant control (3), bed bugs (2), pest control (2), tick control (2) and wasp removal (2). 10 show a licence on their websites. 7 have ten or more years of experience, the longest 35 years. 23 offer emergency call-outs; 17 give free estimates; 5 are family- or locally-owned and 5 list coupons or special offers. We have a website on file for all 24 of the companies on this page; 23 publish a contact page; 22 list a public email and 5 take bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Which listed companies mention pesticide licensing?
10 of the 24 listings on this page show a licence on their websites. Pesticide application is licensed provincially and the registers are public, so ask for the number and confirm it before anybody applies anything indoors.