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Fire ants vs. red ants - what’s the difference?

What is the difference between fire ants and red ants?

Quick comparison: red ants vs. fire ants

  • “Red ants” is a broad term that can describe many ant species, including fire ants.
  • Not all red ants are fire ants, but all fire ants are red (or reddish-brown).
  • Red imported fire ants are an invasive species known for their painful sting.
  • Fire ant stings can cause serious reactions; most other red ants bite rather than sting.

The difference between fire ants and red ants

People often use the terms "red ant" and "fire ant" interchangeably, but they're not the same thing. The term “fire ant” often refers to the invasive red imported fire ant (Solenopsis invicta), although you may come across other species. Likewise, there are many species of red ants to be found in the Eastern U.S. If you’re unsure which species you have on your property our ant control experts can help.

Red ants

“Red ants” is a catch-all term for many ant species with reddish coloring. Several common species fall under this label, from some pavement ants to certain carpenter ants.

  • Appearance — Typically 2mm to 6mm; reddish, orange-brown, or rust-colored; no distinctive markings
  • Habitat — Soil, rotting wood, under rocks, or along sidewalks and foundations
  • Behavior — Generally non-aggressive; forage for food and water; bite when threatened
  • Risks — Bites can cause minor irritation; some species can damage wood or contaminate food

Red imported fire ants

Red imported fire ants are a specific invasive species. They’re one of the more aggressive ants you're likely to encounter in the U.S.

  • Appearance — typically 2mm to 6mm long; reddish-brown body with a darker abdomen; no wings on workers
  • Habitat — Open, sunny areas; they build large, dome-shaped mounds in lawns, fields, and roadsides
  • Behavior — Highly aggressive; swarm quickly when disturbed; sting repeatedly
  • Risks — Stings cause intense burning, pustules, and can trigger severe allergic reactions

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Signs of an infestation

The clearest sign of a red imported fire ant infestation is a raised, dome-shaped mound. They often appear after rain. You may also notice aggressive swarming if the mound is disturbed. For other red ant species, look for ant trails leading to food sources, small soil mounds near foundations, or ants gathering around moisture. If you're seeing large numbers of reddish ants indoors or out, it's worth getting a professional opinion from one of our local experts.

Prevention tips

Keeping ants out involves removing what attracts them and sealing their entry points. Seal cracks and gaps around doors, windows, and utility entry points. Store food in airtight containers, clean up spills promptly, and fix any leaks. Ants are drawn to both food and water sources.

In the yard, keep grass trimmed and avoid leaving debris or wood piles close to your home. Inspect your yard regularly for mounds, especially after wet weather. If you spot fire ant activity, don't disturb the mound, as their stings can be painful and dangerous.

Frequently asked questions

No, not all red ants are fire ants. "Red ant" describes any ant with reddish coloring, and many species fit that description. Red imported fire ants (Solenopsis invicta) are one specific species of fire ant.

Fire ant mounds are distinctive. They're dome-shaped, have no visible entry hole on top, and are often found in open, sunny areas like lawns or fields. Regular ant nests tend to be flatter, smaller, and may have a central opening. Fire ant mounds can appear quickly after rain.

Red ants vary by species, but most share a reddish, orange-brown, or rust-colored body ranging from about 2mm to 6mm in length. Worker ants are wingless, with a segmented body, bent antennae, and six legs.

If you're seeing ants around your home or business, our technicians can identify the species and recommend the right treatment.

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