- light to dark brown
- 1/8 inch long
- 12-semented antennae without a club
- single node with sharp peak distinguishes from odorous house ant
- outdoors: in soil, under rocks and logs; potted plants; landscaping mulch; concrete slabs; crawlspaces; piles of wood or organic matter; exterior walls behind brick
- indoors: in wall voids, under carpets and in basements, usually near moisture (sinks, tubs, leaks, etc.)
- not a common pest in most of Utah
- honeydew produced by aphids and other insects
- feed on a wide variety of foods, but are partial to sweets
- form supercolonies which encompass many individual colonies
- invade buildings when conditions outside are too wet or too dry
- may contaminate food
- Locate and destroy all nests. (Follow ants back from their food source.)
- Trim back shrubs and trees that come into contact with the building.
- Seal all potential ant entrances.
- Use insecticidal baits, especially during winter – early spring when populations are smaller.
- Control is difficult; consider hiring a pest management professional to manage Argentine ants.