WSU CAHNRS and WSU Extension


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Pest NameDescription 
Odorous house antsOdorous house antsOdorous house ants are extremely small. Workers are approximately 1/16 inch long and have a uniform brown to black color. They nest in the soil in shapeless, shallow, and temporary colonies, as these ants frequently move. They feed on a wide variety of things including nectar, honeydew from aphids, and living and dead insects. They easily enter homes where they feed on dairy products, fruit juices and pastry. They are perhaps the most difficult ants in our area to discourage. Swarming occurs throughout the year but most commonly in June and July.