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High Risk

Carpenter Ant

Camponotus spp.

Carpenter ants are among the largest ants in Singapore. Unlike termites, they don't eat wood — they excavate it to create smooth-walled nesting galleries. Over time, this can cause significant structural damage to wooden beams, door frames, and furniture.

Carpenter Ant - Camponotus spp.

Risk Level

High

Active Period

Year-round, primarily nocturnal

Common Locations

Wooden structures, Door frames

Size

6–13mm (workers vary in size)

Identification Guide

How to Identify Carpenter Ant

Physical Appearance

Large black or dark brown ant, sometimes with reddish-brown thorax. Has a smooth, evenly rounded thorax profile when viewed from the side — a key identifying feature. Workers vary significantly in size within the same colony.

Size

6–13mm (workers vary in size)

Common Locations

Wooden structures, Door frames, Trees near buildings, Roof spaces

Carpenter Ant identification
Behaviour Patterns

Habitat & Behaviour

Activity & Breeding

Excavates wood to create nesting galleries but does not eat wood — feeds on sugary substances, insects, and protein. Prefers damp or damaged wood. Creates satellite colonies away from the main nest. Active foragers, especially at night.

Active Period

Year-round, primarily nocturnal

Warning Signs

Signs of Carpenter Ant Infestation

Small piles of sawdust-like frass near wooden structures
Large black ants foraging at night
Rustling sounds inside walls or wooden structures
Smooth-walled tunnels when damaged wood is exposed
Winged ants emerging from wooden areas (swarmers)
Weakened or hollow-sounding timber
Why Act Now

Health & Property Risks

Structural damage to wooden beams and frames
Weakening of load-bearing timber structures
Costly repairs and replacement of damaged wood
Can establish satellite colonies throughout a building
Damage to wooden furniture and fittings
Take Action

Prevention Tips

Replace water-damaged or decaying wood promptly
Keep tree branches trimmed away from buildings
Fix roof leaks and ensure proper drainage
Store firewood and timber away from buildings
Seal gaps where utility lines enter the building
Reduce moisture in roof spaces and wall cavities
Got Questions?

Frequently Asked Questions

Need Help With Carpenter Ant?

Our experienced technicians can identify and eliminate carpenter ant infestations. Contact us for a free inspection and tailored treatment plan.