Argentine, Fire & Carpenter Ants: What are the Differences?

Last Modified on September 23, 2024 by Zachary Smith

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Have you noticed ants in or around your home?

If so, you need to act fast to prevent a full-blown infestation!

Before you can eliminate them effectively, you need to know what type of ants you’re dealing with. Don’t worry, though – we’re here to help.

Our team has been helping California customers deal with ant infestations for more than twenty years.

In this blog, we’ve compiled our top tips for identifying and treating Argentine, fire, and carpenter ants.

How to Tell Argentine, Fire, and Carpenter Ants Apart

argentine vs fire vs carpenter ants

While Argentine, fire, and carpenter ants are all ants, they’re very different.

Here’s a table comparison:

Trait Argentine Ants Fire Ants Carpenter Ants
Appearance
  • Small, shiny, and brown or black in color.
  • Bodies that are about ½”-⅛” long.
  • One-segmented petiole and 12-segmented antennae (no club).
  • They are reddish-brown or black.
  • These ants have prominent stingers on the ends of their abdomens.
  • Typically ⅛”-¼” long.
  • Black or bicolored (black and red).
  • Around ¼-¾” long, with a segmented waist.
  • Foraging workers have large, prominent mandibles.
Habitat
  • They live in soil, under stones, and inside buildings.
  • Nests are commonly located in moist soil, near or beneath buildings, under boards and plants, or along sidewalks.
  • These ants sometimes nest within structures, like under a bathtub or in the cracks of exterior wall voids.
  • They’re common in urban settings.
  • Fire ants build large mounds in sunny areas like fields, pastures, parks, and lawns.
  • Their colonies can contain thousands or even millions of ants.
  • These ants inhabit decaying wood (but they don’t eat it), including fallen trees and wooden structures.
  • They’re known for creating distinct tunnels in wood.
Impact
  • These ants can displace native ant species and damage crops.
  • Their presence indoors can indicate moisture issues.
  • These ants are aggressive and can deliver painful stings.
  • Some people have allergic reactions to fire ant stings. Fire ant stings can even be fatal to especially sensitive people.
  • Fire ants may kill young wildlife or cause sores and nausea in humans.
  • These ants cause structural damage to buildings, which can make buildings unstable or dangerous.
Behavior
  • Argentine ants (Linepithema humile) are tiny, social insects native to South America.
  • They forage in search of food and can infest new areas quickly.
  • They mate in their nests, so winged forms are uncommon.
  • Since they’re well-adapted to urban environments, it’s common for them to thrive where other ants do not.
  • Fire ants (Solenopsis invicta) are aggressive ants known for their painful bites.
  • They swarm when their nests are disturbed.
  • Large colonies can have up to 500,000 workers that forage over areas of more than 100 yards.
  • Fire ants are predators and scavengers. They attack and kill insects and small animals and feed on carrion, honeydew, plants, and other sweet substances.
  • Carpenter ants are less aggressive than fire ants but will defend their nests if provoked.
  • Carpenter ants consume animal and plant foods, including other insects, scraps of human food, and honeydew.
  • Foraging ants can travel up to 100 yards from their nests for food. They tend to be more active during the early evening hours.
  • Established colonies can contain more than 100,000 individuals.

Argentine Ant Control Tips

If you’ve got an Argentine ant infestation, here are a few specific tips to get rid of them:

  • Set Ant Baits: Use ant baits near trails and entry points. Ants who encounter these baits will take granules of the poison back to their colonies, which helps you wipe out infestations faster.
  • Trim Landscaping: Trim back vegetation anywhere it touches your home. Consider treating your yard with insecticide to reduce ant numbers and prevent them from entering your home.
  • Focus on Exclusion: Proactively prevent Argentine ants from entering your home by sealing entry points, installing fine-mesh screens over vents and openings, and keeping firewood and compost piles away from the foundation.

Carpenter Ant Control Tips

To get rid of carpenter ants, focus on making your space less habitable for them.

Here’s how:

  • Manage Moisture: Addressing moisture problems is critical in controlling carpenter ants since they rely on damp wood for nesting. With this in mind, ensure your attics, basements, and crawl spaces have proper ventilation, and fix leaks to prevent the wood in your flooring, walls, or roof from becoming wet and saturated. Regularly inspect wooden structures to identify early signs of moisture damage and fix problems before they get out of control.
  • Identify and Remove Nesting Areas: Look for signs of nesting, like wood shavings and rustling noises. Remove decaying, infested wood to limit the availability of nest materials.
  • Use Appropriate Baits: Set up carpenter ant bait stations in areas where you’ve noticed ant activity. Remember that carpenter ants usually respond well to protein and sugar-based baits.

Fire Ant Control Tips

Fire ants are aggressive, and their stings pack a punch!

Here are some tips to handle them safely:

  • Wear Protective Clothing: Wear gloves and long sleeves to protect yourself from fire ant injury.
  • Treat Mounds Directly: Locate and treat fire ant mounds with targeted baits or liquid insecticide. Effective treatment often includes applying bait around the perimeter of the nests to prevent ants from escaping and building new colonies.
  • Hire Professional Help: For severe infestations, consult a pest control professional, like Smith’s, who is trained to handle fire ants.

For a more comprehensive play-by-play on how to get rid of ants, check out our complete guide.

How to Prevent Ants

  1. Keep Your Home Clean: Keep your surfaces free of food debris, wipe up spills promptly, and vacuum high-use areas (like kitchens) regularly.
  2. Seal Entry Points: Inspect your home for cracks and openings that ants might use to enter, and use caulk to seal up all gaps and cracks around your windows, doors, and foundation.
  3. Remove Food Sources: Store pantry goods and pet food in airtight containers, and keep your trash in durable cans with tight-fitting lids. Avoid leaving pet food out overnight.
  4. Moisture Control: Fix leaks and reduce moisture to eliminate the dampness many ant species need to thrive.

Smith’s is here to Help You Get Rid of Ants!

No matter how hard you try to get rid of ants, some infestations are too severe for DIY fixes.

If you have a severe ant problem, call Smith’s Pest Management for help. We’ve been serving the San Francisco Bay area and Central Coast with expert ant extermination services for 20+ years.

Our skilled team will assess the situation, apply targeted treatments, and offer follow-up treatments to keep your home pest-free.

Ready to learn more? Contact our team today for a quote.

FAQs

Do Argentine ants fight fire ants?

Argentine ants typically avoid confrontation with fire ants.

They tend to focus on foraging and establishing large colonies instead of engaging in fights.

That said, they will occasionally fight other ants over territory

Do carpenter ants bite people or fire ants?

Carpenter ants may sting when threatened, but they’re not usually aggressive.

Compared to fire ants, carpenter ant stings also do not hurt as badly.

Do fire ants damage houses?

Unlike carpenter ants, fire ants don’t damage the structure of houses.

However, they invade homes in search of food and can become a nuisance.

Their presence indoors can also pose a risk to inhabitants due to their aggressive behavior and painful stings.

zach smith

Author Bio: Zach Smith

Landscape Pro Turned Gopher Pro: Owner, Zach Smith, graduate of Cal Poly’s Horticulture program worked nine years as a landscape professional- dealing with gophers, moles, and ground squirrels and was quickly recruited by other local gardeners. Fast forward to the past 15+ years, where Zach and his team trap and remove burrowing pests from residential, municipal and commercial properties throughout the San Francisco Bay area, from Marin to Monterey. Learn more about Zach and his team here.

team photo cropped