Ground beetles are most commonly black but have metallic or iridescent undertones. They have three pairs of legs, two pairs of wings, and prominent mandibles. With more than 2,600 species around the world, these beetles are typically found in or on the surface of a soil-covered ground. Some species are known to help control the spreading of weeds, making them seen as a beneficial insect. However, they can also overrun a building or feed on important crop seeds, such as corn.
Ground Beetle Behaviors
Just as their name implies, ground beetles live out their lives in soil. Outdoors, they are typically found under stacks of wood or logs, in leaves, or under other yard debris. If they make their way inside, they often seek refuge in damp, dark areas such as the basement or in crawl spaces. These nocturnal beetles feed on ants, caterpillars, maggots, slugs, and worms.
Ground Beetle Control & Prevention
To control ground beetles around the home, the most practical solution is to vacuum, sweep or pick up and discard beetles as they appear. Caulk and seal any foundation or siding cracks and openings through which beetles can enter. Stack firewood away from home and remove boards, stones, and other debris from the yard. Minimize the use of lighting immediately next to the structure or switch the lights from bright white to yellow to minimize attracting ground beetles.
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