The Argentine Ant is the most common in the Central Valley. The hot, dry weather can cause them to come into homes and businesses for food and water. When they invade a structure, it is not uncommon to see two or three queens walking with the worker’s ants. The site simple killing of one queen does not stop the colony’s breeding ability because of their nesting behavior and multiple queens in each territory. The wrong type of spray or application of mist can cause the colony to split and create various settlements. Baits are often the best way to destroy the territory from the source.
The Pharaoh Ant is the most difficult ant to remove once it enters the structure. It only nests indoors in most regions of the world; they especially like to set up colonies inside heated buildings. They often choose to start colonies inside wall voids. There can be hundreds of reproductive females in each territory. They love sweet, oily, and fatty foods. Baits may work, but if they are repellent baits, they will fracture and split the colonies. Often the best offense is a good defense. Keeping up with a sound barrier at the base of the building can stop the ants from ever entering the building in the first place.
The Thief Ant gets its name because the ants set their nest close to other ant colonies and steal food from them. The thief ant is also tiny, 1/16 of an inch. Thief ants can nest inside cracks, wall voids, or brick and outside in the soil. They can be yellowish or tan in color. They do have a stinger, but it is tiny.
The Pyramid Ant gets its name because it likes hot claimants and has a pyramid shape on top of its thorax. The Pyramid ant rarely invades structures; they prefer setting up their colonies in the soil or under rocks or wood. Their colonies are small (only a few thousand ants in each territory) with a single entrance to get inside.
The Little Black Ant is native to North America. It has a shiny black color. As the name suggests, it is small, only 1 to 2 mm for the workers, but the queen can get up to 5 mm long. Each nest may have more than one queen. They are now for clear trails to food or water.
The Pavement Ant is Native to Europe; it is one of the most common ant species in the U.S. You can probably guess how it earned its name. They love to make their homes under pavement, building slabs and driveways. The Pavement Ant can be identified by two nodes on the petiole, grooves on the head, thorax, and one pair of spines on the back.