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Ant Exclusion & Foundation Defense

How Do I Stop Ants from Entering My Home Through the Foundation and Siding?

Tired of trailing ants in your kitchen and bathrooms? Learn how Spider Squad's exterior foundation barrier stops ant colonies before they reach your siding.

⚡ Direct Answer / Key Takeaway

To stop ants from entering through the foundation, seal visible exterior hairline cracks with silicone sealant, clear mulch and gravel 6 inches away from foundation walls, and apply a continuous professional residual barrier spray 3 feet up the siding and 3 feet out along the perimeter soil.

Why Ants Target Your Foundation

Ants (including pavement ants, odorous house ants, and carpenter ants) establish main colonies in the warm soil beneath patio stones, sidewalks, and foundation walls. As colonies grow in spring, scout ants forage upward across concrete foundations searching for microscopic mortar gaps and weep holes.

Once an ant finds food, it lays a chemical pheromone trail that guides hundreds of workers directly into your kitchen baseboards.

Foundation Banding

3x3 Exterior Band

Creating a continuous chemical contact zone along the entire perimeter foundation wall and adjacent soil.

Weep Hole Protection

Entry Point Exclusion

Targeting brick weep holes and siding expansion joints where ants migrate into subflooring.

Trail Disruption

Pheromone Breakdown

Residual micro-capsules destroy scent trails, causing confused foraging ants to abandon the route.

Why Store-Bought Ant Bait Traps Aren't Enough

Indoor bait traps draw more ants into your living areas from the exterior nest. A professional exterior foundation barrier stops the problem at the outer boundary, neutralizing the colony outside before worker ants can enter.

Frequently Asked Questions

What types of ants does the foundation spray control?
SpiderShield™ controls carpenter ants, pavement ants, odorous house ants, citronella ants, and pharaoh ants.
Will the spray harm my garden flowers along the foundation?
Our structural foundation spray is applied directly to concrete and foundation mulch margins, avoiding delicate perennial flower heads.

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Choose the protection barrier your property needs. Simple, professional, and guaranteed.

SpiderShield House & Foundation Protection — No Spiders
House Barrier 🕷️ 🐜 🐞 🪳

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 — No Mosquitoes
Yard Barrier 🦟 🪰 🪲

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
Learn About Yard Shield →

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

Wherever You Need Us

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.

Shorelines & Lakefronts Waterfront homes, docks & lakeshore properties where spiders thrive in the damp and shade. Get a Free Quote →
Wooded Areas Rural properties and forest-edge homes with serious perimeter pressure from ground spiders and orb weavers. Get a Free Quote →
Beachfronts & Cottages Sandy shores and seasonal cottages attract hordes of insects — and the spiders that follow them. Get a Free Quote →
Anywhere Bugs Hide Suburban homes, garden beds, garages and eaves — if there’s a dark corner, we treat it. Get a Free Quote →
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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.

⚡ Fully Licensed & Insured 🍁 100% Canadian Business
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Pest Outlook

Seasonal Activity Time Series

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