Earwigs are moisture-loving insects most often found in mulch, leaf litter, bathrooms, basements, and kitchens. While they are not dangerous, their sudden appearance indoors and tendency to hide in damp fabrics, sinks, and crevices makes them a common nuisance pest.
Identification & Behavior
Earwigs are slender, dark brown insects with long antennae and distinctive curved pincers (cerci) on the rear of their abdomen. They are nocturnal scavengers that feed on decaying plant matter, fungi, insects, and sometimes household materials.
Why Earwigs Invade Homes
Earwigs require moisture to survive. They migrate indoors during droughts, heavy rains, or seasonal changes and enter through foundation cracks, door gaps, and utility penetrations.
DIY Prevention Methods
- Reduce outdoor moisture by fixing leaks and improving drainage
- Remove mulch, leaves, and debris from foundations
- Seal cracks and install door sweeps
- Use dehumidifiers in basements and bathrooms
- Keep cardboard, newspapers, and damp fabrics off floors
Natural & Non-Chemical Controls
- Rolled newspaper traps (dispose each morning)
- Shallow oil + soy sauce pit traps
- Diatomaceous earth in wall voids and entry points
- Vacuuming visible insects
Store-Bought Control Options
- Exterior perimeter sprays
- Residual insecticides for foundation treatments
- Insect dusts for cracks and voids
When to Call a Professional
If earwigs persist indoors despite moisture control and sealing, professional exterior barrier treatments can eliminate breeding zones.