06/18/2024
Odorous House Ants
Odorous House Ants are small ants that range in color from brown to black and vary in length from 1⁄16 to 1⁄8 inches (1.5–3.2 mm). When crushed, these ants leave a smell which leads to their nickname "stink ant". Their life cycle: The queens lay eggs which incubate between 11–26 days. After hatching, the larval stage lasts between 13–29 days, and the pre-pupal and pupal stages last between 10–24 days. Queens can live at least 8 months, workers at least a few months, while males appear to live only approximately a week.
These ants can be found in many different areas, including within houses. Outside, they forage mainly for honeydew, which is produced by aphids and scale insects that the ants tend to, as well as nectar and other sugary substances. They are common household pests and are attracted to sources of water and sweets.
Odorous House Ants have polydomous colonies, meaning that one colony has multiple nests. Because of this, they are very good at foraging for food when it is found in various locations. Instead of going back to a faraway nest to deliver food, they move workers, queens, and the brood to be closer to the food.
These ants are scavengers/predators that will eat most household foods, especially those that contain sugar, as well as other insects. Indoors they will colonize near heat sources or in insulation. In hot and dry situations, nests have been found in house plants and even in the lids of toilets. Outdoors they tend to colonize under rocks and exposed soil. They appear, however, to form colonies virtually anywhere, in a variety of conditions. They are also highly tolerant to heat and cold.
Odorous House Ants are not hard to control. This can be accomplished using ant baits. The workers carry the baited material back to the nest, eliminating the colony. Choose baits designated for sweet-loving ants (such as ones that use honeydew as the attractant). Place the bait stations in areas where ant activity has been seen and make sure that children or pets cannot reach them. Refill/replace the bait every week to two weeks to keep the bait levels high. It may require two weeks or longer to obtain control.
To discourage the ants from coming back, standing water should be eliminated in the house, as the ants are attracted to moisture. Plants should be trimmed away from buildings, so they do not make convenient routes for above-ground entry. Cracks, holes, and joints should be sealed, especially close to the ground. Firewood, rocks, and other materials should not be stored next to a home.