Argentine Ant


Actual Size: 2.2 to 2.8 mm

Characteristics: Light to very dark brown.

Legs: 6

Antennae: Yes

Wings: The reproductive males and females have wings.

Habitat: Builds nests near water sources. Outdoors, nests are located beneath boards, stones, or at the base of shrubs. Indoors, will build nests in wall voids and insulation.


  • Attracted to wet environments near food sources.
  • Very efficient foragers that follow regular trails when searching for food.
  • Contaminate food and spread bacteria as they forage for food in pantries and kitchens.

Argentine Ants in the North and East Bay of California

Major ant pests, Argentine ants are found in households and gardens across the North and East Bay of California. When scouting for sources, Argentine ants leave pheromone trails wherever they travel. Due to this habit, they ensure that they never visit the same area twice. Workers from opposing colonies are not aggressive toward each other, and as a result, Argentine ants can form supercolonies. They are one of the most persistent home-infesting pests, contaminating, and spreading bacteria wherever they forage. 

Argentine Ant Habitats

Argentine ant nests are typically located in damp locations near a food source. They construct nests in the ground, in concrete wall cracks, and at the base of trees. In mild environments, Argentine ant nests are typically found outdoors next to sidewalks, gardens, plants, or underneath stones or boards. If it becomes too dry or too wet outdoors, Argentine ants will invade homes. They access structures through cracks and crevices in foundations and are often found near water pipes, sinks, and potted plants. Once inside, they will search for food, feeding on meat, eggs, oils, fats, and sweet items like fruit.

Argentine Ant Behaviors, Threats or Dangers

Although they don’t pose any serious health threats, the sheer population size of an Argentine ant colony is enough to disrupt anyone’s daily life. Most ants only deposit pheromone trails on their way back to the nest from the food source. However, Argentine ants leave behind pheromone trails to and from a food resource. This ensures that they are always covering new ground when searching for food. Because colony size increases quickly, they can rapidly form interconnecting colonies that can lead to a massive infestation. If an Argentine ant infestation is suspected, it is best to contact a professional ant exterminator.

Don’t wait until your home is overrun by ants. Contact Western Exterminator, formerly Hitmen today!