The Ultimate Guide to Ants in Louisiana

While ants are crucial for soil aeration and decomposition, they can also be a nuisance. Invasive species like the Argentine ant often invade homes, causing frustration for residents.

Moreover, ants like the Carpenter ant can damage wooden structures by building their nests inside. This makes understanding and managing these local critters essential for maintaining your home and the environment.

What unique behaviors can we observe in the ant populations of Louisiana? Keep reading to uncover the intricate world of Louisiana’s ants and discover what makes each one special.

Key Takeaways

  • Louisiana is home to various ant species, including Red Imported Fire Ants, Carpenter Ants, and Crazy Ants, each with unique environmental behaviors and impacts.
  • Effective ant control includes quick identification, using natural and chemical pesticides, and implementing preventative measures like sanitation and exterior maintenance.
  • Professional pest control services offer tailored solutions, including inspections and customized treatment plans, essential for managing severe or extensive ant infestations.


In Louisiana, you may encounter various types of ants, some of which pose significant headaches and affect local ecosystems.

Red Imported Fire Ants

Red Imported Fire Ants

With their origin in South America, the Red Imported Fire Ants are notorious for their painful stings and large colonies. They disrupt local ecosystems and damage crops and wildlife.

HabitatPrefer moist areas like lawns and near bodies of water
DietOmnivorous, preferring proteins and fats
BehaviorAggressive, particularly when disturbed
AppearanceReddish-brown, size varies from 1/8-inch to 3/8-inch
Unique FeaturesDisplay strong group tactics and can form floating ‘rafts’ during floods

Carpenter Ants

Carpenter Ants

Carpenter Ants can cause structural damage, such as termites, as they burrow through wood to create their nests.

HabitatPrimarily target decaying or compromised wood structures
DietInsects, sweets, and proteins
BehaviorNocturnal and create smooth tunnels
AppearanceDark brown to black, 1/4-inch to 1/2-inch
Unique FeaturesCan eject formic acid when threatened

Crazy Ants

Crazy Ants

The hairy Crazy Ants get their name from the erratic trails they follow, which are thought to be caused by a disruption in their sensory system. They often infiltrate electronic devices and cause short circuits in states like Mississippi and southern parts of Louisiana.

HabitatAnywhere with food and moisture
DietOmnivorous, favoring sweets and proteins
BehaviorFast and unpredictable in movement
AppearanceDark brown to black, 1/8-inch
Unique FeaturesResistant to many conventional ant baits

Odorous House Ants

Odorous House Ants

Odorous House Ants emit a rotten coconut smell when crushed, contaminating food sources within homes.

HabitatMoisture-rich areas indoors and under rocks
DietSweets, especially honeydew
BehaviorCreate large colonies, nest almost anywhere
AppearanceBrown to black, 1/16-inch to 1/8-inch
Unique FeaturesEmit a distinct odor when disturbed

Pavement Ants

Pavement Ants

Pavement Ants settle under stones, pavements, and cracks, engaging in noticeable territorial battles.

HabitatUnder slabs and stones, in walls
DietOmnivorous, prefer greasy foods and insects
BehaviorSlow-moving, form trails to food sources
AppearanceDark brown to black, 1/10-inch to 1/6-inch
Unique FeaturesKnown for visible turf wars between colonies

Pharaoh Ants

Pharaoh Ants

Pharaoh Ants are a major indoor pest in warmer regions of the US, such as Florida and Texas. They’re difficult to control due to their tendency to split colonies when threatened.

HabitatIndoor warm areas, especially kitchens and hospitals
DietOmnivorous, including fats, proteins, and sweets
BehaviorForm multiple colonies, very resilient
AppearanceLight yellow to red, 1/16-inch
Unique FeaturesOften require professional extermination

Argentine Ants

Argentine Ants

Argentine Ants form massive colonies and outcompete many native species, altering the ecosystem balance, particularly in the Pacific Northwest (i.e., Washington).

HabitatMoist areas, often near food
DietSweet foods, fats, and oils
BehaviorNon-aggressive to each other, forming supercolonies
AppearanceDark brown, 1/8-inch
Unique FeaturesAble to form large colonies with multiple queens

Little Black Ants

Little Black Ants

Little Black Ants are frequently found in kitchens, attracted to any crumbs or spills left out.

HabitatIn soil, rotting wood, and masonry
DietOmnivorous, prefer meats, vegetables, and sweets
BehaviorVery active, quickly form trails to food
AppearanceShiny black, 1/16-inch
Unique FeaturesTheir small size allows them to infiltrate many areas

Acrobat Ants

Acrobat Ants

Acrobat Ants are known for their ability to lift their abdomen over their thorax and head when disturbed.

HabitatDecaying wood, foam panels, and inside homes
DietInsects and sweets
BehaviorNests often located in tree trunks or branches
AppearancePale brown to black, 1/16-inch to 1/8-inch
Unique FeaturesDistinctive heart-shaped abdomen and clubbed antennae

Ghost Ants

Ghost Ants

Ghost Ants are elusive and problematic in homes due to their preference for nesting indoors and their tiny size.

HabitatSoil, under rocks, in potted plants
DietSweets and insects
BehaviorDisperse widely when disturbed, often trailing along edges
AppearancePale, almost translucent, 1/16-inch
Unique FeaturesNearly invisible due to their pale color


Controlling and preventing ant infestations involves timely identification, using effective pesticides, and consistently implementing preventative measures to ensure a home remains ant-free.

Identifying an Ant Infestation

According to the LSU AgCenter, quick identification of an ant infestation is crucial for effective control. Check the following areas frequently:

  1. Kitchen counters and cabinets
  2. Pantry and areas where food is stored
  3. Window sills and door frames
  4. Inside bathrooms and laundry areas
  5. Around pet food bowls

Using Natural and Chemical Pesticides

As homeowners, you can choose between natural remedies and chemical pesticides for initial ant control. Consider these methods and their application.

Pesticide TypesMethod of Use
Diatomaceous earthSprinkle around ant pathways.
Vinegar solutionSpray on trails and entry points.
Ant BaitsPlace in areas of activity.
SpraysUse on nests and around the perimeter.

Employing Preventative Measures

Preventative measures are integral to keeping ants at bay. Adopt the following practices:

  • Food Storage: Store food in sealed containers.
  • Sanitation: Clean spills and crumbs promptly.
  • Trash Management: Use bins with tight-fitting lids.
  • Exterior Maintenance: Seal cracks and crevices in walls and foundations.


When dealing with ant infestations in Louisiana, DIY pest control often fails. So, seeking professional pest control services becomes essential. These experts offer various targeted control methods to manage pest ant populations effectively.

Here’s what you can expect from them:

Pest Management ServicesDetails
Initial InspectionProfessionals start by thoroughly examining your property to identify ant species and the extent of the infestation. They check interior and exterior spaces, noting areas of activity and potential entry points.
Customized Treatment PlansDepending on the ant species and infestation level, pest control services provide personalized treatment options. They may use baits, sprays, or non-chemical methods tailored to your situation.
Follow-up VisitsTo ensure long-term success, pest control companies typically schedule follow-up visits. These are crucial for monitoring the effectiveness of the treatment and making necessary adjustments.


Attempting to tackle the ant problem alone might worsen the situation when encountering inaccessible or extensive nests.

If you find that ants are causing structural damage or notice an influx of carpenter ants, these are particularly destructive insects that can compromise the integrity of wooden structures.

Whether you’re in Baton Rouge, Plaquemines, or New Orleans, seeking expert help should be easy. For immediate intervention for a severe infestation, let Lajaunie’s ant control specialists tailor a solution that’s right for your home.

For more information about the areas we service, visit our location page.