Ants exploit every crack, gap, and gap in your home's foundation. Our exterior barrier treatment hits foraging trails right where they originate - but only if we can reach the full perimeter. Here's exactly how to set our technician up for success.
Ant control is almost entirely an exterior job. Pavement ants nest under concrete slabs, foundation footings, and mulch - not inside your walls. Carpenter ants forage from satellite nests near the foundation before moving indoors. Our residual barrier treatment stops both species at their entry points and foraging paths.
To do that effectively, we need a clear, unobstructed walkway around the entire exterior of your home. If items block sections of foundation, those gaps in the barrier are exactly where ants will continue to enter.
Clear a minimum 3-foot zone around the entire exterior foundation - every wall, every corner, every entryway - before your technician arrives. The more access we have, the more complete the barrier.
Patio chairs, benches, tables, and BBQs should be moved at least 3 feet from the foundation. Ants trail along the wall base - if we can't reach it, we can't treat it. On decks and patios, shift everything toward the centre.
Planter soil stays consistently moist, attracting the insects ants hunt. Move every pot, window box, and hanging basket at least 3 feet from the house. This also allows us to treat beneath them - ant trails often run directly under pots along the foundation.
This is critical for ant treatment. Pavement ants nest right at the foundation footing - if mulch is piled against the base of the wall, we can't reach the soil and concrete joint where colonies begin. Rake mulch back 4 to 6 inches so we can apply product directly to the critical zone.
Carpenter ants are strongly attracted to wood-to-soil contact. Any lumber, firewood, or stored wood material directly against the foundation is a major risk factor and physically blocks treatment. Move stacks at least 10 feet from the house, elevated off the ground if possible.
Organic waste is one of the primary ant attractants. Bins stored against the house should be moved away for the day of treatment. If you have an outdoor compost bin touching the foundation, move it to the far end of the yard.
Garden tools leaning against the wall, coiled hoses, or stored equipment all block our spray line. Move them at least 3 feet out or into a shed for the appointment.
Shrubs, hedges, and climbing plants that contact the siding give ants a direct elevated highway into the structure - bypassing our ground-level barrier. Trim so there is visible clearance between plants and the wall surface.
While our treatment is exterior-focused, interior food sources keep ants motivated to push through barriers. Before your appointment, wipe down kitchen counters, seal dry goods in containers, empty and rinse recycling bins, and clean up any pet food bowls.
Keep all windows, doors, and pet doors closed while the technician applies product. This is especially important at basement level and near any known ant entry points.
The product needs 30 to 45 minutes to dry under normal conditions. Pets should not walk on treated foundation areas until dry. Small children should be kept inside during application and until surfaces are fully dry.
The concrete-to-soil interface at the base of your foundation is where pavement ant colonies establish. Our product is applied directly into this zone, targeting the nests and the foraging trails radiating outward from them.
Every door threshold, garage door seal, pipe penetration, and utility entry point is treated. These are the routes interior scouts use once they've found a food source inside.
Visible and invisible ant trails along the foundation line, sidewalk edges, and garden borders receive a residual application. Any ant crossing the treated zone picks up a lethal dose and carries it back to the colony.
Treatment remains active for 6 to 10 weeks under normal conditions. Rainfall reduces effectiveness at the surface - our product is designed to bond to the soil and concrete substrate, but a very heavy spring can warrant a touch-up.
Completely normal for the first 3 to 5 days. As foragers cross the treated zone, they become disoriented and may appear more active before dying. This activity peaks around day 2 and declines sharply from day 4 onward. Colony collapse typically completes within 2 to 3 weeks.
Ready to Book?
Same-week service available across Southern Ontario. Book your exterior barrier treatment today.
Call 905-935-7498 Learn About Ant ControlResidential 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.
View Services →
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.
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.