5 Signs You Have an Ant Infestation in Your Calgary Home
Seeing a few ants in your home doesn't always mean you have an infestation — but it can be an early warning sign. Ant colonies can number in the thousands, and by the time you see ants indoors, the colony may already be established in or near your home. Here are 5 signs you have an ant infestation that requires professional treatment.
1. Ant Trails in Your Home
If you see a line of ants following the same path across your kitchen counter, baseboard, or floor, you're looking at an ant trail. Ants leave pheromone trails for other ants to follow to food sources. A visible trail means the colony has found a food source in your home and is actively sending workers to collect it. This is one of the clearest signs of an established infestation.
2. Ants in Multiple Rooms
A few ants in your kitchen might be foragers from an outdoor colony. But if you're seeing ants in multiple rooms — kitchen, bathroom, basement, living room — it suggests the colony is inside your home or has multiple entry points. Indoor ant colonies, especially pharaoh ants and odorous house ants, can spread throughout a building quickly.
3. Sawdust-Like Material (Frass)
If you notice small piles of sawdust-like material near baseboards, window sills, door frames, or wooden structures, you likely have carpenter ants. This material is called frass — it's the wood excavated by carpenter ants as they tunnel through wood to build nests. Finding frass is a serious sign that requires immediate professional treatment to prevent structural damage.
4. Ants at Night
Most ant species, especially carpenter ants, are most active at night. If you see ants in your home at night — particularly large black ants — you likely have a carpenter ant colony nesting in your walls, attic, or other wooden structures. Nighttime ant activity is a strong indicator of an indoor colony rather than outdoor foragers.
5. Winged Ants Indoors
Winged ants (also called swarmers or alates) are reproductive ants that leave the colony to start new colonies. If you see winged ants indoors, especially in spring or early summer, it means a mature colony is nesting in your home and producing new reproductive ants. This is a sign of a well-established infestation that requires immediate professional treatment.
What to Do If You See These Signs
If you notice any of these signs, don't wait — ant infestations get worse over time. Carpenter ants can cause structural damage, pharaoh ants can spread to multiple areas of your home, and all ant species contaminate food surfaces.
Call a Professional
Calgary Pest Guard provides professional ant control services throughout Calgary and surrounding areas. Our licensed technicians identify the ant species, locate the colony, and eliminate it at the source — including the queen. Call (825) 760-5364 for a free quote and same-day service.
Don't Spray
If you have pharaoh ants, spraying can cause the colony to split (bud) into multiple colonies, making the infestation much worse. Professional baiting is the only effective approach for pharaoh ants.
How to Prevent Ant Infestations
- Seal cracks and entry points around your foundation
- Keep food in sealed containers
- Clean up spills and crumbs immediately
- Fix leaky pipes and eliminate standing water
- Trim vegetation away from your home's exterior
- Store firewood away from your house
Call Calgary Pest Guard for Ant Control
If you're seeing signs of an ant infestation in your Calgary home, call Calgary Pest Guard at (825) 760-5364. We serve Calgary, Airdrie, Cochrane, Chestermere, Okotoks, and surrounding areas with guaranteed ant control services.