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🕷️ Family-Owned Spider & Pest Control Services
Spider Identification
Not sure what spider you found? This guide covers the species Ontario homeowners encounter most - what they look like, where they live, whether they bite, and what to do about them.
Ontario is home to over 800 spider species, though only a handful are regularly encountered in and around homes. Most Ontario spiders are harmless - they are efficient predators of the insects that would otherwise be living in your home alongside you. The concern for most homeowners is less about danger and more about the discomfort of sharing your living space with them.
This guide covers the species you are most likely to find: the ones responsible for the cobwebs in your basement, the large spider on the garage floor in September, the pale spider on the wall at night, and the enormous spider on the dock. Click any species for full identification details, bite risk, seasonal activity, and habitat information.
The vast majority of Ontario spiders are not medically dangerous. The only spider in Ontario with genuinely medically significant venom is the northern black widow (Latrodectus variolus), which is rare and restricted to extreme southern Ontario - primarily the Niagara Peninsula and the Carolinian forest zone.
The yellow sac spider is the species most likely to bite Ontario homeowners unprovoked and is responsible for the majority of spider bites reported in the province - but its bite, while painful, is not medically dangerous.
The brown recluse spider does not live in Ontario. If you think you spotted one, this guide explains what Ontario species are commonly mistaken for it.
Get Rid of Them
Identified the spider - now want it gone? Spider Squad's exterior perimeter treatment eliminates spiders and the insects they feed on. Find your region below.
📞 905-935-7498 Find My RegionResidential Pest Control
From urban detached homes to waterfront cottages, our barrier treatments are tailored to your property type and the unique pest pressures it faces.
Full exterior barrier spray covering foundations, soffits, window frames, and all entry points. Safe for families and pets once dry.
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Specialized dock, boathouse, and cottage treatments designed for heavy lakeside spider and bug pressure through the full season.
Waterfront Solutions →
Weddings, garden receptions, backyard parties & corporate gatherings — we treat your venue 24–72 hours before guests arrive, so the only guests are the ones you invited.
Event & Wedding Services →Full-Property Barrier Protection
Our exterior barrier treatments protect against the full range of common seasonal invaders — not just spiders.
Family-Owned. Fully Licensed. Genuinely Local.
Spider Squad is a family business — not a franchise, not a call centre. Our team lives in the communities we serve, which means faster scheduling, real accountability, and treatments designed for the pest pressures specific to this part of Ontario.
Wherever You Need Us
From the shores of Lake Erie to cottage-country docks — if bugs are a problem, we’re already on the way.
What Homeowners Say
“Spider Squad sent someone within 48 hours. The technician was knowledgeable, professional, and the treatment worked. Haven’t seen a single web since.”
“I was skeptical about the annual plan but it’s been worth every penny. Our cottage used to be covered in dock spiders — completely clear all season.”
“They explained everything before starting. Safe for my dogs, no smell, and the results are real. I’ve recommended them to four neighbours already.”
Don’t Wait
Same-week service available in most communities. Get a free assessment — no obligation.
Don’t Let Spiders Take Over
Tell us about your property and we’ll respond within hours to book your service. No obligation, no pressure.
