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Termites vs. carpenter ants – what's the difference?

What is the difference between termites and carpenter ants?

Quick comparison: termites vs. carpenter ants

  • Termites feed on wood; carpenter ants nest in wood but don't eat it.
  • Carpenter ants are typically larger and have a pinched waist.
  • Termites have a broad, straight body.
  • Both can swarm in spring, but their wings look very different up close.
  • Termites cause an estimated $6.8 billion in property damage in the U.S. every year.

The difference between termites and ants

Termites and carpenter ants are two very different insects, but they're easy to mix up, especially when they swarm. Here's a clear breakdown of what sets them apart.

Termites

Termites are wood-destroying insects that feed on cellulose found in timber, paper, and other plant-based materials. They work silently and out of sight, which is why infestations often go undetected for years.

  • Appearance: Creamy white to pale brown. Soft-bodied. 1/8 to 1 inch long depending on caste, with two pairs of equal-length wings that shed after swarming and straight, bead-like antennae.
  • Habitat: Soil, wood, or inside walls. Rarely seen in the open.
  • Behavior: Feed on wood 24/7. Live in large colonies of thousands to millions.
  • Risks: Structural damage to timber, flooring, walls, and foundations.

Carpenter ants

Carpenter ants are one of the largest ant species in the U.S. They don't eat wood, but they excavate it to build their nests, which can still cause significant structural damage over time.

  • Appearance: Shiny black, red, or bicolored with a clearly pinched waist. 0.25 to 0.5 inches long with two pairs of wings (the front pair noticeably larger than the rear). Its antennae are bent at a distinct angle.
  • Habitat: Moist or decaying wood; wall voids; tree stumps and logs.
  • Behavior: Forage for food at night; push sawdust-like frass out of galleries.
  • Risks: Structural damage from nesting and potential stings if disturbed

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Signs of an infestation

For termites, watch for mud tubes along your foundation, hollow-sounding wood, discarded wings near windows, or small pellet-like termite droppings known as frass.

For carpenter ants, the most telling sign is a trail of coarse sawdust near baseboards, window frames, or door frames, along with the ants themselves, which are most active after dark. You may also hear faint rustling inside walls.

Prevention tips

Reducing moisture is one of the most effective things you can do against both pests. Fix leaking pipes, improve drainage around your foundation, and make sure gutters direct water away from the building. Keep firewood, lumber, and mulch away from the exterior walls.

For termites specifically, avoid wood-to-soil contact wherever possible, and consider a professional inspection if you haven't had one recently. Our termite prevention page has more practical steps you can take.

For ants, seal cracks and gaps around doors, windows, and utility entry points. Keep food stored in sealed containers and clean up spills promptly.

Termites can cause serious structural damage before you even know they're there.

We work with both residential and commercial customers to develop a personalized treatment plan.

Presto-X provides pest control services to its commercial and industrial clients throughout the central United States.

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