There are approximately 22 earwig species in the United States. In the western and northern regions of the United States, the primary pest species is the European earwig (Forficula auricularia), which was introduced into North America in the early 1900’s. If an earwig feels threatened, they can emit a foul-smelling yellow liquid in defense.

Earwigs can be an extremely significant pest. Earwigs are known to feast on plants and can often be found in gardens, landscaping, and in potted plants. Often referred to as the “Pincher Bug,“ the earwig is distinguished by a pair of sharp pincers at the tail end, which they use mainly for defense. The earwig has 6 legs that are light brown in color, and they have 2 antennae that extend off the front of their head.

Earwigs are nocturnal insects that typically hide in small, dark and damp crevices during the daytime hours. They become active at night where they search for different insects and plants to feed off of. Earwigs are usually found in damp areas, such as under mulch, dead leaves, logs, and piles of firewood, boards, stones and other debris or in rotted wood where they feed on moist, decaying plant material. They are often more prevalent in rainy seasons and found in moist locations that offer that type of ideal living space. When inside, earwigs can be found in basements, laundry rooms, bathrooms, and in mudrooms.