Earwigs
Despite their intimidating appearance, earwigs are not dangerous to humans or pets. Their long pincers, or cerci, look menacing but are primarily used for sensing their environment and occasionally for defense or mating rituals. Earwigs do not bite, sting, or carry diseases, but they can become a major nuisance and cause damage to landscaping and ornamental plants.
These nocturnal insects are commonly found throughout Southern California, especially in moist, shaded areas. Outdoors, they live in large groups, feeding on both live and decaying plant material. While they prefer the garden, they can move indoors when outdoor conditions become too dry or cool; typically, in search of moisture and warmth.
Why Earwigs Are a Problem
Earwigs may be small, but they can cause significant damage both indoors and outdoors. Understanding their behavior and the problems they cause is key to effective prevention.
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Landscaping Damage – Earwigs chew on leaves, flowers, fruits, and seedlings, often leaving ragged edges and holes that make plants look unhealthy.
Indoor Nuisance – While they don’t infest food or structures, their presence indoors—especially in bathrooms, laundry rooms, and kitchens—can be unsettling.
Moisture-Seekers – These pests are attracted to damp environments and will enter homes through tiny cracks to access areas with excess moisture.
Rapid Populations – Earwigs can reproduce quickly, especially when food and moisture sources are readily available, leading to a fast-growing infestation.
Earwig Biology & Behavior
Understanding earwig habits helps in preventing and managing infestations. These nocturnal pests can be hard to detect but are highly active in the right conditions.
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Diet – Earwigs feed on soft-bodied insects, fungi, and a variety of plant materials, both live and decaying.
Habitat – Earwigs thrive in cool, damp environments such as under mulch, leaf litter, potted plants, and firewood.
Nocturnal Behavior – Earwigs are active at night, foraging for food. If disturbed during the day, they scatter quickly, which can be alarming.
Indoor Entry – Most earwigs enter homes through cracks in foundations, windows, and doors, often following plumbing or electrical lines.
Preventing Earwigs in Your Home
Earwigs are drawn to moist, sheltered spots around your home. By making a few simple changes, you can significantly reduce the chances of an earwig infestation.
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Clean Up Yard Debris: Remove leaf piles, mulch, and plant waste—common hiding places for earwigs.
Seal Entry Points: Inspect and seal cracks around your home’s foundation, windows, and doors to block their entry.
Fix Leaky Pipes: Earwigs are attracted to moisture, so repair leaks under sinks or in basements where water collects.
Adjust Your Sprinklers: Avoid overwatering, especially near your home’s exterior, to reduce excessive moisture.
Drain Standing Water: Empty saucers under potted plants and containers to eliminate water sources.