What to Know About Crazy Ants in Louisiana

close-up yellow crazy ant on green leaf

In Louisiana, the surge of ‘crazy ants’ is causing concern. Known for their unpredictable behavior, these ants are more than just pests.

They pose ecological and economic risks by damaging electrical equipment and outcompeting native ant species.

What makes these ants thrive, and how can Louisiana tackle this issue? Stay tuned to discover more about the efforts to manage their invasion.

Key Takeaways

  • Crazy ants, or tawny crazy ants, are recognized by their reddish-brown color, lack of wings, and erratic movement in moist areas around homes in Louisiana.
  • Originating from South America, crazy ants spread to Louisiana mainly through human activities like shipping and landscaping in the early 2000s.
  • These ants cause significant economic and ecological damage in Louisiana by invading electrical systems, displacing native species, and impacting biodiversity.
  • Effective control of crazy ant infestations involves using DIY measures like natural repellents and professional extermination services for severe cases.
  • If crazy ants are found in electrical equipment or DIY methods fail to prevent their spread, you should immediately seek professional pest control help.


Crazy ants in Louisiana have become notable pests, recognized for their chaotic foraging patterns and rapid movements.

Physical Description

Crazy ants, specifically the tawny crazy ant, known scientifically as Nylanderia fulva, display several unique physical features.

These ants are named for their erratic and quick walking style. Unlike many other ant species, crazy ants do not have wings, reinforcing their terrestrial nature.

  • Size: Adult workers measure about 1/8 inch (3-4 mm) in length.
  • Color: A characteristic reddish-brown hue covers their bodies.
  • Antennae: Their antennae are elongated and possess 12 segments with no club.
  • Hair: Notable for being known as “hairy crazy ants,” they have longer hairs, or setae, on their bodies.
  • Stinger: No visible stinger; instead, they have an acidopore at the tip of the abdomen.
  • Movements: They exhibit irregular, rapid movements, darting around unpredictably.

Habitats and Behaviors

The typical habitats of crazy ants in Louisiana are in moisture-rich areas. They are often found in damp areas under porches, around leaky faucets, or near air conditioner units.

Here’s a closer look at where they nest and how they behave:

Nesting SitesBehavioral Traits
Wall voidsHighly adaptable to environments
Under landscape materialsForage erratically for food and water
Garbage pilesNest in both dry and moist areas
Electrical equipment and utilitiesDrawn to electrical equipment
Potted plants and soilShow aggressive behavior toward others


Controlling and preventing crazy ant infestations requires a strategic combination of DIY pest control methods and professional extermination techniques to manage these persistent pests effectively.

DIY Prevention and Control Strategies

Proactive measures are essential in keeping crazy ants at bay. As homeowners, you can minimize the risk of infestations through several direct actions, such as:

  • Use natural remedies that repel ants, such as vinegar or essential oils around entry points.
  • Apply diatomaceous earth around your home’s perimeter.
  • Seal cracks and crevices with caulk to prevent entry.
  • Install screens on windows and doors to keep ants out.
  • Keep kitchen surfaces clean and free of food particles.
  • Store food in airtight containers to avoid attracting ants.

While natural remedies like vinegar or essential oils may deter ants, they might not eliminate established infestations.

Professional Extermination Methods

Professional exterminators are the next line of defense when an infestation is beyond DIY solutions. When you choose their services, you can expect a comprehensive approach, such as:

InspectionProfessionals assess the extent of the infestation and identify crazy ant nesting sites.
Treatment Tailored PlansSolutions using professional-grade insecticides or pesticides like Termidor and Fipronil.
Follow-up and MaintenanceOngoing services to prevent reinfestation, often recommended by experts.
Guarantee of ServiceMany professionals offer a guarantee that eliminates ants to the client’s satisfaction.

Additionally, you can engage with local experts, such as entomologists from the LSU AgCenter, to stay updated with the latest news on infestation prevention.


When dealing with crazy ants in Louisiana, you should look for several warning signs that it’s time to call professional pest control experts.

If you discover crazy ants in your home’s electrical systems—such as outlets, appliances, or air-conditioning units—you should contact professionals immediately. 

Whether you’re in Baton Rouge 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.