Earwigs are the dark, pincer-tipped bugs you find under flowerpots, in mulch, and occasionally in a damp bathroom. Despite the old myth, they don’t crawl into your ears, and the pincers (called cerci) are mostly for show. An earwig can pinch if you squeeze it, but it rarely breaks skin, carries no venom, and poses no real health threat. In San Diego they thrive because our irrigated landscaping, mulch beds, and marine-layer humidity give them exactly the damp, dark cover they need.
If you’re seeing earwigs around the house, you’re not dealing with a dangerous pest. You’re dealing with a moisture problem and some easy hiding spots. Here’s how to identify them and shut down what’s drawing them in.
what earwigs look like
Earwigs are easy to recognize once you know the pincers. No other common San Diego household bug carries that forceps-like tail. Here’s the quick breakdown.
| Feature | Detail |
|---|---|
| Size | About half an inch to three-quarters of an inch long |
| Color | Dark reddish-brown to nearly black, sometimes with paler legs |
| Pincers (cerci) | Curved forceps at the rear; males have curved pincers, females straighter |
| Body | Long, flat, segmented, with a hard outer shell |
| Antennae | Long, thin, about half the body length |
| Wings | Most have wings folded under short wing covers, but they rarely fly |
| Behavior | Active at night, hides in damp dark spots by day, moves fast when disturbed |
The flat body matters. It lets earwigs squeeze under doors, into wall gaps, and beneath pots and boards. When you lift a planter and a few dark bugs scatter for cover, you’re almost certainly looking at earwigs.
why earwigs show up in San Diego homes
Earwigs are built for damp. They breathe through their bodies and dry out quickly, so they spend daylight hours pressed into moist, shaded cover. San Diego gives them plenty of it.
The biggest driver is irrigation. Drip lines, sprinklers, and overwatered beds keep the soil and mulch damp around the clock, which is ideal earwig habitat. Thick mulch, leaf litter, and dense ground cover hold that moisture against the soil and create a dark layer for them to live in.
Climate shapes where they’re worst. Coastal neighborhoods get the marine layer most mornings, so humidity stays high and earwig pressure runs steady through much of the year. Inland and East County homes see drier air, but irrigated yards and shaded beds still hold enough moisture to support a population, especially in spring after the winter rains.
Earwigs move indoors when their outdoor cover dries out or when something draws them to the wall. A hot, dry stretch pushes them toward the damp foundation and into the house through gaps. Exterior lights also pull them toward the building at night, where they find their way under thresholds.
where you find earwigs in the house
Indoors, earwigs head straight for moisture. The same logic that drives silverfish indoors applies here, which is why you often find both pests in the same rooms. Damp is the shared root cause.
Bathrooms are a common find. Earwigs turn up around tubs, behind toilets, and under sinks where there’s standing humidity and slow leaks. Kitchens are similar, especially under the sink and behind the dishwasher.
Outside the wet rooms, check entry points. Earwigs gather at door thresholds, in window tracks, and along baseboards near the foundation. Potted plants are a classic hiding spot, both indoor pots and ones brought in from the patio. Lift any potted plant that’s been sitting in a saucer of water and you’ll often find a cluster underneath.
In the yard, they’re under mulch, in leaf litter, beneath stones and boards, under the edge of the lawn, and tucked into dense ground cover against the house.
do earwigs bite or cause damage
Here’s the honest version. Earwigs are a nuisance pest, not a danger. They don’t bite the way a flea or spider does. If you trap one against your skin it can give a light pinch with its cerci, but it almost never breaks the skin and there’s no venom involved. They don’t spread disease, and they don’t damage your home’s structure the way termites or carpenter ants do.
The real damage is in the garden. Earwigs feed at night on soft plant material, and they can chew ragged holes in seedlings, leafy greens, dahlias, and other tender plants. Heavy populations can set back a vegetable bed or a flower planting. For most established plants the damage is cosmetic, but young seedlings can take a real hit.
There’s a small upside worth knowing. Earwigs also eat aphids, mites, and other soft-bodied pests, so a modest number in the garden isn’t all bad. The problem is numbers. A few earwigs help; a heavy infestation chews up plants and starts showing up indoors.
how to get rid of earwigs
Earwig control is moisture control. Kill the dampness and the dark cover, and the population drops fast. Spraying alone, without fixing the conditions, never holds.
Start with water. Dial back overwatering, run irrigation in the early morning so beds dry through the day, and fix any leaks under sinks and outdoor spigots. Make sure downspouts carry water away from the foundation instead of pooling against it.
Next, remove the harborage. Pull mulch and dense ground cover back several inches from the foundation so there’s a dry zone against the house. Clear leaf litter, lift boards and stones off the soil, and thin out the damp clutter where earwigs hide. Move potted plants off the ground or empty standing water from their saucers.
Then seal the perimeter. Caulk gaps around doors and windows, add or replace worn door sweeps and weatherstripping, and close cracks where the foundation meets the wall. Swapping bright white exterior bulbs for warmer yellow bug lights cuts down on the earwigs drawn to the building at night.
Indoors, a vacuum handles the ones you can see, and reducing bathroom and kitchen humidity removes the reason they stay. A basic general pest control treatment around the foundation and entry points clears active earwigs and leaves a barrier, but it only sticks if the moisture and harborage are fixed too.
DIY works for a handful of earwigs and a yard you can dry out. When you’re finding them indoors week after week, or a heavy outdoor population keeps pushing inside no matter what you change, that’s when a local pro earns the call. Pest Pros San Diego connects you with experienced local technicians who’ll inspect the perimeter, find the moisture source, and treat the harborage zones the bugs are actually using. You can reach us at (858) 925-5546, or see our full pest control services in San Diego for county-wide coverage.
frequently asked questions
Do earwigs bite in San Diego?
Earwigs don’t bite the way fleas or spiders do. If you press one against your skin it can pinch with the cerci at its tail, but the pinch is weak, rarely breaks skin, and carries no venom. They’re a nuisance pest, not a biting threat to you or your family.
Why do I have earwigs in my bathroom?
Bathrooms hold the humidity and standing moisture earwigs need to survive. They gather around tubs, behind toilets, and under sinks where there are slow leaks or constant damp. Fix the leaks, run the fan to lower humidity, and seal gaps under the door, and they lose the reason to stay.
Are earwigs dangerous?
No. Earwigs carry no venom, don’t spread disease, and don’t damage your home’s structure. The pincer myth about crawling into ears isn’t true. Their only real harm is chewing on tender garden plants and seedlings when populations get heavy.
How do I get rid of earwigs in my house?
Cut the moisture they depend on, then close their way in. Reduce overwatering and fix leaks, pull mulch back from the foundation, and clear damp clutter and leaf litter outside. Seal door and window gaps, add door sweeps, and vacuum the ones indoors. A perimeter pest treatment helps, but only after the dampness and hiding spots are handled.
What attracts earwigs?
Moisture and dark cover, in that order. Overwatered beds, thick mulch, leaf litter, damp foundations, and clutter against the house all draw them in. Bright exterior lights pull them toward the building at night, where they slip inside through thresholds and gaps.
Do earwigs come inside in San Diego?
Yes, especially when their outdoor cover dries out during hot stretches or after irrigation changes. They move toward the damp foundation and enter through door gaps, window tracks, and foundation cracks. Coastal homes with steady marine-layer humidity tend to see the most consistent activity through the year.