Pavement ants are about 3/16" in length and are brown in color. These ants primarily nest outdoors, but occasionally enter the house for foraging. These ants can also be identified by the two nodes located between the thorax and the abdomen. Because of their large numbers, these ants can present a huge problem for homeowners. Foraging in the thousands, these pavement ants can parade back and forth to a food source, day and night. They will feed on other insects, meats, sugars, greases -- pretty much anything edible. They are also known as "sugar ants" or "grease ants".