Odorous house ants get their name from the pungent odor given off when crushed. Workers are about 1/16 – 1/8” long and are brown to black in color. Inside, odorous house ants nest in wall voids near a moisture source such as hot water pipes, around sinks and leaky fixtures. They often seek entry indoors when their food source is reduced by rain or during the fall. Outside, they are frequently found under stone, walkways, firewood, debris and exposed soil. Odorous house ant swarmers emerge May – mid July.