Spiders are one of the most common household pests in Maple Ridge, BC — and one of the most misunderstood. Most of the spiders you encounter in your home are completely harmless and actually beneficial, eating mosquitoes, flies, and other insects. But that doesn’t make them welcome houseguests.
As temperatures warm in spring and summer, spider activity increases throughout Maple Ridge, Coquitlam, and the Lower Mainland. You’ll start noticing more webs in corners, garages, and basements — and occasionally a large, fast-moving spider crossing your living room floor. This guide covers the most common spiders in the area, which ones you should actually worry about, and when it makes sense to call for professional spider control.
The Giant House Spider — BC’s Most Misidentified Spider
If you’ve ever seen a large, brown, fast-running spider in your Maple Ridge home and nearly jumped out of your skin, you’ve probably met the giant house spider (Eratigena atrica). These are the spiders most people call about — and the ones least likely to cause any harm.
Identification
- Body length: 12-18mm (about the size of a loonie including legs)
- Brown to dark brown with lighter markings on the abdomen
- Long, hairy legs that make them look even larger
- Very fast runners — they can cover several feet per second
Are They Dangerous?
No. Giant house spiders are not considered medically significant. They can bite if handled roughly, but their venom has no meaningful effect on humans. The bite is less painful than a bee sting.
Why They’re in Your Home
Giant house spiders typically live outdoors in wood piles, under bark, and in garden debris. They enter homes in fall when males are searching for mates. Once inside, they prefer dark, undisturbed areas — basements, garages, crawl spaces, and closets.
The Hobo Spider — Reputation vs. Reality
The hobo spider (Eratigena agrestis) has a complicated reputation. For years, it was believed to cause necrotic (flesh-eating) wounds, similar to the brown recluse. However, recent research — including studies from the University of California and the Centers for Disease Control — has largely debunked this claim.
Identification
- Body length: 7-14mm
- Brown with a distinctive herringbone or chevron pattern on the abdomen
- Less hairy legs than the giant house spider
- Builds funnel-shaped webs at ground level
Are They Dangerous?
Current scientific consensus is that hobo spiders are not significantly dangerous to humans. Earlier studies linking them to necrotic bites were not well-controlled, and the species has been removed from the CDC’s list of venomous spiders. That said, any spider bite that becomes red, swollen, or doesn’t heal should be evaluated by a doctor.
Where You’ll Find Them
Hobo spiders are common throughout the Lower Mainland, including Maple Ridge. They prefer ground-level hiding spots — under boxes in the garage, behind furniture, in window wells, and around the foundation. Their funnel webs are often found in basements and crawl spaces.
The Cross Spider (Garden Spider)
The cross spider (Araneus diadematus), also called the European garden spider, is one of the most visible spiders in Maple Ridge yards during late summer and fall.
Identification
- Round abdomen with a distinctive white cross pattern
- Builds large, circular orb webs between bushes, fence posts, and porch railings
- Orange-brown to dark brown coloring
Are They Dangerous?
Not at all. Cross spiders are harmless to humans and excellent at catching mosquitoes and flies. They rarely enter homes — their large orb webs are designed for outdoor hunting.
Should You Remove Them?
Generally, no. Garden spiders are beneficial. However, if webs are blocking doorways or high-traffic areas, they can be gently relocated with a cup and paper.
The Black Widow — BC’s Only Medically Significant Spider
The western black widow (Latrodectus hesperus) does exist in British Columbia, though sightings in Maple Ridge are uncommon. They’re more frequently found in the dry southern interior — places like Osoyoos, Kamloops, and the Okanagan. However, they can occasionally turn up in the Lower Mainland, especially in imported goods, firewood, or warm, sheltered areas.
Identification
- Shiny black body with a distinctive red hourglass marking on the underside of the abdomen
- Females are about 8-15mm in body length
- Males are much smaller and not considered dangerous
Are They Dangerous?
Yes — the black widow is the only spider in BC with venom that’s medically significant to humans. Bites cause intense pain, muscle cramping, nausea, and in rare cases, serious systemic reactions. Deaths are extremely rare (especially with modern medical care), but bites require medical attention.
What to Do If You Find One
Don’t handle it. If you suspect a black widow in your Maple Ridge home, call a pest control professional. Canadian Pest Control can safely identify and remove the spider and inspect for others.
Other Common Spiders in Maple Ridge
Cellar Spiders (Daddy Long-Legs)
- Tiny body, extremely long thin legs
- Build messy, irregular webs in basements and closets
- Completely harmless — they’re actually effective predators of other spiders
Wolf Spiders
- Robust, hairy spiders that hunt on the ground (no webs)
- Fast runners, sometimes found in garages and basements
- Can bite if provoked, but the bite is mild — comparable to a bee sting
Jumping Spiders
- Small, compact spiders with large forward-facing eyes
- Known for their curious, jumping movement
- Completely harmless and often considered cute (as far as spiders go)
When to Call an Exterminator for Spiders
A few spiders in your home is normal — especially in spring and fall. But there are situations where professional spider control makes sense:
You’re Seeing Large Numbers
If you’re finding multiple spiders daily, or webs are appearing faster than you can remove them, you likely have an underlying insect problem. Spiders go where the food is. A pest professional can identify and treat the root cause.
Spiders in Living Spaces
Finding spiders in basements and garages is one thing. Finding them regularly in bedrooms, kitchens, or children’s rooms warrants professional treatment — both for comfort and peace of mind.
You Suspect a Black Widow
Any suspected black widow sighting should be handled by a professional. Don’t attempt to catch or kill it yourself.
Recurring Infestations
If you’ve tried DIY sprays and the spiders keep coming back, the products you’re using may not be reaching the areas where spiders hide and breed. Professional treatments target harborage zones that over-the-counter products can’t reach.
How to Reduce Spiders in Your Maple Ridge Home
Prevention is the best approach for managing spiders:
- Reduce clutter — spiders love undisturbed boxes, piles of clothes, and stored items. Keep storage areas organized.
- Seal entry points — caulk gaps around windows, doors, and foundation penetrations. Install door sweeps.
- Remove webs regularly — consistent web removal discourages spiders from rebuilding in the same spots.
- Manage outdoor lighting — lights attract insects, which attract spiders. Use yellow or sodium vapor bulbs for exterior lighting, or position lights away from doorways.
- Control moisture — fix leaky faucets, run dehumidifiers in basements, and ensure proper drainage around the foundation.
- Trim vegetation — keep shrubs and plants at least 12 inches from exterior walls to eliminate spider harborage.
- Address the food source — if you have a spider problem, you likely have an insect problem. Treating for ants, flies, and other prey insects reduces spider populations naturally.
Professional Spider Control from Canadian Pest Control
Canadian Pest Control offers targeted spider treatment for homes and businesses in Maple Ridge, Coquitlam, Port Coquitlam, Pitt Meadows, and the Lower Mainland. Our approach includes:
- Inspection to identify spider species and harborage zones
- Exterior perimeter treatment to create a barrier that prevents spiders from entering
- Interior treatment of basements, crawl spaces, garages, and other key areas
- Web removal from accessible surfaces
- Recommendations for ongoing prevention
Whether you’re dealing with a basement full of cobwebs or a spider you’re not sure about, we can help. Call (778) 598-7378 for a free quote — available 24/7.