The Argentine Ant is the most common in the Central Valley. The hot dry weather can cause them to come into homes and business in search of food and water. When they invade a structure it is not uncommon to see two or three queens walking with the workers ants. Simple killing one queen does not stop the colonies ability to breed.Because of their nesting behavior and multiple queens in each colony. The wrong type of spray or application of spray can cause the colony to split and create multiple colonies. Baits are often the best way to destroy the colony from the source.
The Pharaoh Ant is the most difficult ant to rid of once it enters the structure. It only nest indoor in most regions of the world, they especially like to set up colonies inside heated buildings. They often choose to start colonies inside of wall voids. There can be hundreds of reproductive females in each colony. They love sweet, oily and fatty foods. Baits may work but if they are repellent baits it will fracture and split the colonies. Often the best offense is a good defense. Keeping up with a good barrier at the base of the building can stop the ants from every entering the building in the first place.
The Thief Ant gets it name because the ants set up there nest close to other ant colonies and steals food from those colonies. The thief ant is also very small, 1/16 of an inch. Thief ants can be found to nest both inside of 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 very small.
The Pyramid Ant gets its name because it likes hot claimants and has a pyramid shape on top of it thorax. The Pyramid ant rarely invades structures, there prefer setting up there colonies in the soil or under rocks or wood. There colonies are small (only a few thousand ants in each colony) 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 suggest 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.