Are the spider spray products safe for my pets?

Yes. Once the spray dries (about 30-60 minutes), it bonds to the surface and is safe for kids and pets. Keep them away until it is completely dry.

Are there Black Widow spiders in Toronto?

No. There are no established populations of Black Widows in Toronto. The large spiders you see near the water are usually harmless Dock Spiders.

Why do I have spiders on my high-rise condo balcony?

Baby spiders travel by 'ballooning' on the wind. They land on balconies, and if your balcony light attracts flying insects, the spider will stay and build a web.

Spider Control in Toronto

Toronto’s proximity to Lake Ontario, its massive ravine network, and its older housing stock create the perfect environment for spiders.

While most spiders in Toronto are harmless to humans, they become a significant nuisance when they take over the exterior of your home or move into your living spaces in large numbers. Exterior spiders cover your porch, windows, and security cameras with sticky webbing that traps dirt and looks terrible. Interior spiders, particularly cellar spiders, thrive in the damp basements common in older Toronto neighbourhoods like the Annex, Cabbagetown, and Riverdale.

Pestisect provides comprehensive spider control for Toronto homes and businesses. We offer exterior perimeter sprays to keep webbing off your house and targeted interior treatments to eliminate basement and living area infestations.

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Common spiders

The Common Spiders in Toronto

The Dock Spider (Fishing Spider)

The largest spider you’ll see in Toronto. They don’t spin webs; they hunt. Common near the lakefront, in the Toronto Islands, and near the Don and Humber ravines. While terrifyingly large, they are skittish and generally harmless.

The Cellar Spider (Often called "Daddy Longlegs")

Very long, thin legs with a small body. They build messy, irregular webs in corners, basements, crawlspaces, and garages. In older Toronto homes with damp, unfinished basements, cellar spider populations can explode, covering the entire ceiling in webbing.

The House Spider

The architect of the classic “cobweb.” They build webs in upper corners of rooms, behind furniture, and inside window frames. They often abandon old webs to build new ones, quickly cluttering a room.

The Yellow Sac Spider

A small, pale yellow spider that doesn’t build a typical web. Instead, it builds small silken “sacs” in corners where the wall meets the ceiling. They are active hunters at night. Their bite can cause localized pain and swelling, similar to a wasp sting.

Note: Black Widows and Brown Recluses are not native to Toronto. While they occasionally hitchhike in produce or shipping crates, there are no established populations here

Spiders

Why Toronto Homes Get So Many Spiders

Proximity to Water & Ravines

Spiders go where the food is. Areas near Lake Ontario or the ravine system have massive populations of midges, mosquitoes, and flies. Spiders build webs on the exterior of homes in these areas to catch this abundant food source.

Exterior Lighting

Many modern Toronto homes feature extensive exterior lighting (pot lights in soffits, bright porch lights). These lights attract flying insects at night, which in turn attracts spiders. The spiders build webs directly over the light fixtures to catch the drawn-in bugs.

Older Basements

Toronto is full of century homes with rubble foundations or older poured concrete that leaches moisture. Damp, dark basements provide the perfect habitat for cellar spiders and house spiders to breed year-round.

Spider control

Our Spider Control Process

We tackle spider problems using a two-pronged approach: removing the current webs and applying a residual treatment to prevent spiders from returning.

Exterior Perimeter Treatment (Spring & Summer)

Exterior spiders are a major complaint in Toronto, especially near the lake. We use an extending web-sweeper brush to physically remove all webs, egg sacs, and live spiders from your eaves, window frames, door frames, and porch ceilings.

Then, we apply a professional-grade, micro-encapsulated residual spray around the perimeter of your home. This spray is applied to the foundation, window frames, soffits, and under the eaves. When a new spider tries to attach a web to a treated surface, the residual product eliminates them. This treatment lasts for 60 to 90 days.

Interior Treatment (Year-Round)

For interior infestations (like a basement overrun with cellar spiders), we first physically sweep down the webs. Then, we apply a targeted crack-and-crevice spray along the baseboards, in the corners where the wall meets the ceiling, and behind heavy furniture or storage racks.

We also use insect monitor traps (glue boards) placed discreetly in corners to catch hunting spiders (like Yellow Sac spiders) that don't stay in webs.

Moisture & Lighting Recommendations

Because spiders follow their food, we will advise you on environmental changes. We often recommend switching exterior bulbs to yellow "bug lights" (which attract fewer flying insects) and using a dehumidifier in older Toronto basements to make the environment less hospitable to spiders and their prey.

spider pattern

Toronto Neighbourhood Spider Patterns

The Beach, Leslieville, Harbourfront: Extreme exterior spider pressure from May to September. Spiders spin massive webs over windows and balconies to catch the midges blowing off Lake Ontario. Exterior residual spray is highly recommended.

The Annex, Cabbagetown, Riverdale: Century homes with deep, damp basements. Interior cellar spider complaints are the primary issue here. Crack-and-crevice treatments combined with dehumidification work best.

High Park, Rosedale: Proximity to mature trees and ravines brings a mix of large hunting spiders (like Dock spiders) and exterior web-builders.

Frequently Asked Questions

Are the products you use safe for my pets?

Yes. Once the residual spray dries (usually within 30 to 60 minutes), it bonds to the surface and is completely safe for children and pets to be around. We ask that you keep pets out of the treated area until the technician confirms it is dry.

Will one spray get rid of spiders forever?

No. Spiders are an ongoing natural presence in the environment. An exterior perimeter spray will significantly reduce the population and keep webs off your house for 2 to 3 months. For homes near the lake or ravines, we often recommend two exterior treatments per season (one in late spring, one in mid-summer) to maintain control.

I heard Toronto has Black Widow spiders. Is that true?

No. The Northern Black Widow’s range barely touches the southernmost parts of Ontario near the US border, but there are no established populations in Toronto. You are very unlikely to ever see one here unless it hitchhiked in a shipment of imported grapes. The large, scary spiders near the lake are usually harmless Dock Spiders.

Why do I get so many spiders in my new Toronto condo?

Spiders can easily climb to high balconies, but they usually arrive via the wind. Baby spiders use a technique called “ballooning” — they release a strand of silk that catches the wind and carries them high into the air, often landing on condo balconies. If your balcony has lights on at night, it attracts flies, giving the ballooning spider a reason to stay and build a web.

Can you spray my boathouse or dock at the cottage?

We service the Greater Toronto Area. While we do not travel to Muskoka or the Kawarthas, we do treat boat slips, marinas, and waterfront structures within the Toronto city limits, strictly following Ministry of the Environment regulations regarding pesticide use near waterways.

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