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Argentine Ants

Active Seasons

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Appearance and Size Facts

  • Argentine ants are light brown to brown in color
  • Size: Roughly 1/10 inch in length
  • Often present in massive numbers and move in large trails up buildings and trees
  • Found all year-round
  • Will eat almost anything but prefer sweet food

Behavior and Habitat of Argentine Ants

Workers are often present in large numbers and are moving in trails. Trails may be similar to White-footed ant trails, but Argentine ants are more slender and move more quickly so the trails may not appear as condensed. Workers may overwhelm outdoor eating areas, even entering parked cars. Argentine ants have multiple queen nests with many widespread subcolonies containing millions of ants. They are usually found in heavily disturbed sites, but can invade natural environments. They nest in mulch, soil, near tree roots, in trees, in rotten wood, or even in garbage piles.

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Signs of Infestation of Argentine Ants

The most visible sign of Argentine ants infestation is foraging trails of many ants traveling up buildings, trees and into homes.

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Tips for Prevention of Argentine Ants

Keep food items secured and pet food off of the floors. Keep bushes and shrubs trimmed 2 foot from the home. Caulk any visible cracks around windows and doors.

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Argentine Ant Gallery

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Photograph of argentine ant number 2

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