The first warm week in Guelph and the calls start. Ants on the kitchen counter, ants along the window sill, ants pouring out of a crack in the basement floor. Every spring, like clockwork.
Here's what's actually happening, why ant problems get worse before they get better, and what really stops them.
Why You See Ants in Spring
Ant colonies don't die in winter. They survive in deep nests below the frost line and become active again when soil temperatures rise. By the time you see them in your kitchen in May or June, the colony has been busy for weeks, expanding the nest and sending out scout workers looking for food.
When a scout finds something good — crumbs near the toaster, a sticky spot under the dishwasher, pet food in the laundry room — it lays down a chemical scent trail back to the nest. Within hours, dozens or hundreds of workers follow that trail.
This is why ant problems often appear "suddenly." The colony was always there. You just hadn't been visited yet.
What Kind of Ants Are You Actually Dealing With?
Most ants in Guelph homes are one of three species:
Pavement ants. Small, dark brown to black, the most common kitchen ant. Build nests under driveways, sidewalks, foundations, and patios. Annoying but harmless.
Odorous house ants. Tiny, dark, with a distinct smell when crushed (often described as rotten coconut). Tend to nest in walls and under floors. Their colonies can split if disturbed, making the problem worse.
Carpenter ants. Larger, black, sometimes reddish. The species that can damage your home by tunneling into damp wood. If you're seeing ants noticeably bigger than the typical kitchen ant, especially indoors at night, look closer.
The treatment approach changes depending on which species you have, which is why "spray the visible ants" rarely solves the actual problem.
Why DIY Spray Often Makes It Worse
Hardware-store ant sprays are designed to kill ants on contact. They do that. The problem is what they don't do:
- They don't reach the nest.
- They don't kill the queen (the colony's only egg-layer).
- They can cause some species to "bud" — splitting one colony into multiple new ones.
You spray the trail, the visible ants die, and the colony responds by sending more — sometimes through different entry points. A few weeks later, you have ants in two rooms instead of one.
What Actually Works
Effective ant control follows three steps:
1. Identify the species and find the nest. Different ants behave differently. The treatment plan starts with knowing what you're dealing with and where.
2. Use bait, not contact spray. Modern ant baits work by exploiting the colony's own behaviour — workers carry the bait back to the nest, where it spreads through the colony and kills the queen. This is slower (usually 1–2 weeks) but actually solves the problem.
3. Address the conducive conditions. Food sources, water sources, and entry points. Without this, even a successful treatment leads to a new colony moving into the same spot.
For carpenter ants specifically, you also need to address the moisture issue that attracted them in the first place — leaks, condensation, water damage.
What You Can Do Right Now
If you're seeing ants today, before any pro work:
- Don't spray the visible trail. Wipe it down with soapy water to disrupt the scent.
- Find the entry point. Watch where the ants are coming from. Often it's a gap around a window, a crack in the foundation, or a utility entry.
- Eliminate easy food. Wipe counters, store food in sealed containers, take out garbage.
- Address moisture. Fix leaks, dry up water around the dishwasher, check under sinks.
- Trim vegetation away from the house. Branches touching siding are an ant highway.
These won't solve a real infestation, but they'll slow it down and make professional treatment more effective.
When to Call a Pro
Call for professional ant control if:
- You're seeing trails that come back after wiping or DIY spraying
- You suspect carpenter ants (size, sawdust piles, indoor activity at night)
- The colony seems to be in a wall or under a slab
- You've sprayed and the problem has spread to new areas
- You can't find the source after looking
How Summit Handles Ant Problems
Tateum's approach starts with identification and inspection — not with pulling out a sprayer. The treatment plan depends on what species, where the nest is, and what's making the property attractive.
Most ant jobs are resolved within 2–4 weeks with a combination of targeted bait, perimeter treatment where appropriate, and conducive condition fixes. Carpenter ant jobs sometimes take longer, especially when moisture issues need addressing.
Frequently Asked Questions
Why do ants come back every spring?Outdoor colonies near your home survive the winter and become active again. Without addressing entry points and conducive conditions, the same colony explores your kitchen every year.
Can ants damage my Guelph home?Most can't. Carpenter ants can — they tunnel into damp wood and over time damage structural elements.
Are professional ant treatments safe for pets?Yes. Modern baits are placed in protected stations or applied where pets can't reach. Tateum will walk through any precautions.
How long does ant treatment take to work?Bait-based treatments typically show results within 1–2 weeks. Visible activity may briefly increase as workers find the bait and carry it back.
Stop Wiping the Counter Every Morning
If ants are part of your spring routine, they don't have to be. The right treatment, applied correctly, ends the cycle.
Summit Pest Control handles ant identification and treatment across Guelph, Cambridge, KW, and surrounding areas.
Call (226) 780-6446 or request a quick estimate today.