Carpenter Ant
The carpenter ant excavates galleries in wood to establish its nest. It can cause significant structural damage to Montreal buildings.

Identification sheet
Health risks
Carpenter ants don't transmit diseases, but they can cause major structural damage that compromises building integrity. Repairs are often very costly.
Signs of infestation
- Fine wood shavings (frass) under wooden structures
- Crackling noises in walls
- Winged ants indoors in spring
- Smooth galleries in wood (different from termites)
- Ant trails in evening and at night
- Wood that sounds hollow when tapped
Prevention tips
- Remove damp or rotten wood around the house
- Cut tree branches that touch the house
- Fix water leaks promptly
- Ensure good ventilation of crawl spaces
- Store firewood away from the house and elevated
- Replace damaged wood in structures
Think you have carpenter ant?
Contact us for an inspection and free quote. 24-hour maximum response time.
