Earwigs are among the most misunderstood household pests. The old myth about them crawling into sleeping ears is exactly that, a myth; these insects are harmless to people and pets. What actually attracts them indoors is moisture, decaying plant matter, and the tight, dark gaps around foundations, door thresholds, and utility lines. Before reaching for a spray can, it helps to understand the insect itself, because most earwig problems are solved by changing conditions rather than by killing bugs one at a time. The same planning you would put into choosing building plans for a construction project applies to pest proofing: a house with dry crawl spaces, sealed openings, and no standing water rarely attracts earwigs at all.
This article covers earwig identification, the indoor and outdoor conditions that invite them in, natural traps that remove them without chemicals, the moisture fixes that keep them out, and the point at which professional help makes sense. Most households resolve the problem in two to three weeks with nothing more than a vacuum, a few traps, and a weekend of drainage work.
Identifying Earwigs and Understanding Their Behavior
Adult earwigs measure about half an inch to one inch long and range in color from light brown to reddish brown. The most recognizable feature is the pair of forceps-like pincers at the rear of the abdomen, which males use in mating displays and both sexes use for defense and for folding their delicate wings. Despite those pincers, earwigs cannot sting, and they rarely pinch hard enough to break skin. More than 20 species live in North America, and all of them follow the same basic playbook: hide by day in damp, narrow spaces, then forage at night.
Living plants are a minor part of the earwig diet. The insects feed mainly on decaying organic matter, dead insects, and soft plant tissue, so a garden that looks fine by day can show chewed leaves by morning. Indoor earwigs are usually lost foragers that wandered in from the yard and found conditions they liked.
How to Confirm It Is an Earwig
Earwigs are often confused with silverfish, firebrats, and young cockroaches. Three quick checks separate them:
- Pincers. Only earwigs carry the curved forceps at the rear of the body.
- Movement. Earwigs scuttle quickly when exposed, while silverfish move in a wriggling glide.
- Habitat. Earwigs cluster in moist organic matter near the ground, while cockroaches prefer kitchens and food sources.
Gardeners who have fought aphid infestations know how easy it is to spot sucking insects clustered on stems and leaf undersides. Earwigs are the opposite: they hide by day and forage at night, which is why a daytime walk-through of the garden often shows nothing while the porch light at midnight reveals dozens.
Earwig Life Cycle at a Glance
Earwigs undergo incomplete metamorphosis, meaning the young look like miniature adults. Females lay clusters of 20 to 60 eggs in soil chambers in late winter or early spring and guard them until they hatch. Nymphs molt several times and reach maturity in roughly two months. Most species produce one generation per year, with peak activity in late summer, so an indoor spike in August usually points to a maturing outdoor population rather than a new invasion.
Why Earwigs Invade Homes
Three conditions pull earwigs across the threshold, and they rarely appear alone.
The Three Invitation Factors
- Moisture. Leaky faucets, sweating pipes, humid basements, and clogged gutters create the damp microclimate earwigs require to survive. A basement reading above 60 percent relative humidity is an open invitation.
- Harborage. Mulch, leaf litter, stacked firewood, potted plants, and clutter pressed against the foundation give earwigs daytime cover within steps of the door.
- Light. Outdoor lights attract the small insects earwigs feed on, and the foraging activity follows the food source to walls, windows, and doorways.
Pest control guidance published by Bob Vila’s team covers how to get rid of earwigs in practical, step-by-step detail, and the consistent takeaway is that removing moisture matters more than any single trap or spray. A home with a dry perimeter, a clear foundation line, and sealed entry points solves the underlying invitation instead of just thinning the population.
Natural Traps That Work Indoors
Before any pesticide enters the picture, traps can remove the active population in a matter of days. These methods are cheap, non-toxic, and safe around children and pets.
Rolled Newspaper Trap
- Dampen several sheets of newspaper until they are moist but not dripping.
- Roll them into tight cylinders and secure each one with a rubber band.
- Place the rolls along baseboards, under sinks, and in corners where you have seen earwigs.
- In the morning, carry each roll outside and shake the earwigs into a bucket of soapy water. Repeat nightly for one to two weeks.
The trap works because it replicates the dark, damp crevice earwigs seek during the day. Check the rolls every morning and dispose of the contents before the insects scatter.
Oil Trap Recipe
A shallow dish or jar lid filled with a quarter inch of vegetable oil plus a few drops of soy sauce lures earwigs with scent and drowns them in the oil. Place traps along walls and near doorways, out of reach of pets, and refresh the oil every few days until catches decline.
Vacuuming is the fastest short-term option. A shop vacuum with a crevice tool pulls adults and egg clusters out of window sills, baseboard gaps, and the space behind appliances, and the contents can be emptied directly into a sealed bag.
| Method | Materials | How It Works | Best Location |
|---|---|---|---|
| Rolled newspaper | Damp newspaper, rubber bands | Mimics a dark daytime crevice | Baseboards, under sinks |
| Oil trap | Shallow dish, vegetable oil, soy sauce | Scent lures, oil drowns | Along walls, near doorways |
| Diatomaceous earth | Food-grade powder | Abrades the exoskeleton and dehydrates | Cracks, thresholds, baseboards |
| Vacuum | Shop vacuum with crevice tool | Removes adults and eggs instantly | Window sills, behind appliances |
Traps clear the active population, but the yard conditions that keep soil damp also keep the problem coming back. The same careful, selective approach used to control clover in your lawn without damaging the grass applies here: remove the wet thatch and mulch layers earwigs shelter in rather than treating the whole yard with chemicals.
Removing Moisture and Hiding Spots Outdoors
Indoor traps handle the insects already inside. Long-term control happens outside, where the population actually lives.
Six Outdoor Fixes, in Order
- Clean gutters and downspouts so rainwater moves at least three feet away from the foundation.
- Re-grade low spots that hold puddles against the house, and add splash blocks under downspout outlets.
- Pull mulch, leaf litter, and ground cover back at least 12 inches from the foundation wall.
- Store firewood off the ground and away from the house, ideally on a rack with air space beneath.
- Keep grass mowed and remove tall weeds along the perimeter so daytime cover stays thin.
- Replace bright porch lights with yellow bug bulbs, or move fixtures away from doorways.
Earwigs share the damp, shaded microclimate that slugs prefer, so the drainage and debris work that keeps slugs away from your property doubles as earwig prevention. Address both pests at once and the payoff is a drier yard that supports fewer of either.
Indoors, the same logic applies. Run bathroom and kitchen exhaust fans, fix drips under sinks, and use a dehumidifier in basements that read above 60 percent relative humidity. Earwigs that cannot find moisture stop finding your house worth the trip.
Chemical Options and When to Call a Professional
Pesticides belong in this plan as a last resort, not a first response. When traps and moisture fixes have not done the job after a few weeks, consider these options in order of intensity:
Choosing the Least Toxic Option First
- Diatomaceous earth, applied as a thin dust in cracks, thresholds, and along baseboards. It works mechanically, so it stays effective as long as it stays dry.
- Pyrethrin-based perimeter sprays, applied around the foundation exterior, door thresholds, and window frames. Follow the label and keep treatments away from edible plants and water sources.
- Commercial earwig baits placed in the moist zones where activity is heaviest. Baits are slower than sprays but target the population rather than the surface.
Call a professional when earwig activity persists after four to six weeks of consistent trapping and moisture control, when you cannot locate the source of the dampness, or when the property has structural issues such as a chronically wet crawl space. A broader lawn pest control strategy that covers moles, mice, and earwigs treats the yard as one system instead of chasing individual pests, and that systems view usually delivers longer-lasting results.
Keeping Earwigs Away for Good
The final phase is a maintenance routine that prevents re-establishment.
A Fifteen-Minute Monthly Check
- Walk the foundation line and re-seal any new cracks, gaps around pipes, and worn door sweeps.
- Confirm gutters are flowing and downspouts still discharge away from the house.
- Shake out potted plant saucers, pet bowls, and any container that can hold standing water.
- Lift a few mulch patches and confirm the soil beneath is dry rather than soggy.
The same logic that applies to controlling no-see-ums in your yard and home holds for earwigs: treat the environment, not just the insect, and the problem stays solved. Earwigs are a symptom of dampness and clutter. Remove those two conditions, keep the traps handy for the occasional straggler, and the pincered visitors stop showing up.