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A Division of Advantage Pest Control Inc.

Carpenter Ants Toronto

Carpenter Ant Information

Tips For Getting Rid Of Carpenter Ants


After a pesticide treatment, it is advisable to leave any dead ant bodies where they are. Other scavenging ants will either ingest or bring the dead ant back to the nest to feed the rest of the colony. In this way, the pesticide's effect is passed on. 

Our control methods have two major goals: elimination and prevention. Firstly we eliminate all carpenter ants from inside your home. Secondly we put a chemical barrier to prevent their return.

We recommend physical control as well as chemical control. This means reducing the amount of areas for harbouring carpenter ants in and around the home.

Once a colony is well established in your Toronto home, it is necessary to locate key areas and treat the home for permanent or long-term control.

Carpenter Ant Infestations

How Do I Know I Have Carpenter Ants?


  1. Determine if there is actually an infestation of carpenter ants or if it is a case of individual ants wandering in the house.
  2. Look for a high concentration of ants in a particular area like under the kitchen sink.
  3. Listen for the sound of an active colony which will produce a dry rustling noise that can be heard best at night during high ant activity and quiet time in the house. The use of a wine glass or stethoscope can be helpful to listen to the walls.
  4. Notice if there are swarms of winged reproductive ants trying to escape to the outdoors, usually in the spring.

Carpenter Ant Information

Carpenter Ant Colonies

A colony typically has one queen who begins the nest under a rock, in a tree hole or a tunnel in a tree. She will lay a few eggs which will hatch to be the first workers of the colony. These are the smallest ants of the colony called Minims. These minims are given the task of foraging for food and feeding the queen and any young she produces. 


The queen ant will lay 22 eggs in 15 days. It takes between 60 and 70 days to reach adult stage.

During the spring, carpenter ant colonies will produce winged male and female ants that will fly out from the nest to start a new colony. this occurs when the colony needs to expand, generally when the colony numbers more than 2,000 workers. This is what is called "swarming" it can be both male and female winged ants or just males who are 'evicted' by worker ants.

Carpenter ants will travel great distances in their quest for food for the queen. They have been noted foraging up to 750 feet from the nest! Carpenter ants are commonly wingless, non-reproducing adults of the worker caste. All ants live in large groups or colonies consisting of hundreds of workers, a few reproductive males and females as well as at least one queen. Mating takes place in flight by winged ants during late spring and early summer. Shortly after, the male dies and the single fertilized queen ant finds a suitable nesting place to lay eggs and begin a new colony. The small, white, oval eggs hatch into larvae. The queen continues nourishment until the larvae pupate and adult ants emerge. If warm temperatures exist, the egg to adult cycle can be completed in three months. At first, the colony is small, however, in later years the population can increase to 2000-3000 ants.


Carpenter ants live both outdoors and indoors in moist, decaying or hollow wood. They create "galleries" into the wood grain to make passageways sot hey can move throughout the nest. Certain parts of a typical Toronto home, such as the windows, roof eaves, decks and porches, are more likely to be infested by carpenter ants because these areas are most vulnerable to moisture. Carpenter ants are the largest ants that are invading homes. They seek food and harbourage. They are a wide spread pest problems, spanning across North America.