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Species Problem Guide Ontario

Orb Weaver Spider Control: Giant Siding & Window Webs

Cross & Bridge Orb Weaver Eradication

In late summer and early autumn, giant circular geometric webs seem to appear out of nowhere across Ontario front porches, windows, and soffits. Learn how cross orb weavers and furrow spiders operate and how Spider Squad eliminates them.

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The Late-Summer Orb Weaver Explosion in Southern Ontario

Orb weavers (family Araneidae) are the architects behind the massive spiral wheel-shaped webs that stretch across doorways, walkways, and second-storey windows from August through October. While immature orb weavers go unnoticed during spring, by late summer females reach full adult size (up to 20 mm) to prepare for egg laying.

Cross Orb Weaver (Araneus diadematus)

Distinguished by a white cross-shaped pattern on a mottled brown/tan bulbous abdomen. Commonly found suspended across garden pathways, exterior window frames, and porch pillars.

Bridge & Furrow Spiders (Larinioides)

Heavy, dark-patterned orb weavers that specialize on waterfront structures, siding overlaps, metal roof trims, and outdoor lighting fixtures along Lake Ontario and Lake Erie.

How Spider Squad Eliminates Giant Orb Weaver Webs

Because orb weavers consume and rebuild their sticky silk webs every 24 hours, physical removal alone is useless. Our two-step treatment delivers lasting results:

  1. Mechanical Web & Egg Sac Removal: We use high-reach extension poles to sweep away active webs and hidden egg sacs tucked inside siding corners and eave channels.
  2. Micro-Encapsulated Residual Spray: We coat eaves, window trim, foundation lines, and structural joins with PMRA-registered bifenthrin or deltamethrin. Any spider contacting the surface absorbs the active ingredient and is eliminated within hours.

Frequently Asked Questions

Are orb weaver spiders dangerous to humans or dogs?
No. Orb weavers are non-aggressive and possess weak venom that is harmless to humans and pets, causing only minor localized redness if pinched. However, their massive webs and intimidating size cause severe distress.
Why do orb webs reappear every single night?
Orb weavers naturally consume their old web at dawn and spin a brand new web at dusk. Only a chemical residual barrier on anchoring surfaces prevents them from rebuilding.
Will rain wash away the treatment on my eaves?
No. Professional micro-encapsulated polymers bond to siding and wood substrates, providing 60 to 90 days of rain-resistant residual control.

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SpiderShield™ House & Foundation Protection

Our flagship exterior structural barrier targets the full perimeter of your home — foundations, soffits, window frames, eaves, and all entry points. Repels and eliminates spiders, ants, and crawling insects before they enter.

  • Full exterior perimeter barrier spray
  • Combines spider and ant control in one package
  • Safe once dry (30–60 min). No odour or stains
  • Free respray if you see new activity within 2 weeks
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Yard Shield™ Mosquito & Tick Barrier

A comprehensive yard-level barrier applied to shaded vegetation, ornamental shrubs, deck skirting, and property borders. Reduces adult mosquito and tick populations around your outdoor living space.

  • Treats active mosquito and tick resting zones
  • Lawn-to-woodland transition border coverage
  • Sold only as season-long plans prorated throughout the year
  • Allows you to reclaim your deck and backyard comfort
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SpiderShield™ perimeter barrier

Complete Crawling Insect Protection

SpiderShield™ creates an invisible exterior barrier that prevents more than just spiders — blocking ants, earwigs, crickets, and other seasonal crawlers from entering your home.

Ants Lady Bugs Stink Bugs Boxelder Bugs Cluster Flies Crickets Earwigs

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We Go Where the Bugs Are

From the shores of Lake Erie to cottage-country docks — if bugs are a problem, we’re already on the way.

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Pest Outlook

Seasonal Activity Time Series

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