The Argentine ant is the most common species of ants in Southern California. They are a small, dark-colored ant about 3 mm (1/8 inch) long and invade homes looking for food and water. The Argentinians have a peculiar preference for sweets but will feed on anything they can find including other insects or plants.
These ants pose an extreme threat to native wildlife by upsetting delicate food webs due to their aggressive nature combined with enormous colony sizes that may team up with colonies from other areas.