Earwigs indoors usually came in from outside, so vacuum them up, cut moisture, and seal entry points to stop the invasion.
Finding earwigs inside is unsettling, but it’s rarely a sign of a dirty home. Earwigs wander in from the garden seeking damp, sheltered spots, and the best way to get rid of earwigs indoors is to remove the ones you see, dry out the spaces they love, and seal the cracks they use to get in. Skip the spray for now—pesticides are a last resort here.
Why Earwigs Come Inside In The First Place
Earwigs are outdoor insects that thrive in cool, moist environments. They end up indoors by accident, usually crawling under doors or through foundation cracks while searching for food or a humid hiding spot. North Carolina State University notes that earwigs do not typically become established indoors except in areas with high moisture.
That single fact points to the real fix. Dry out your home, and the earwigs will have no reason to stay. Basements, crawl spaces, bathrooms, and the area under sinks are the prime indoor targets.
The Indoor-First Plan: 5 Steps That Work
Follow these steps in order. For most homes, this combination clears the problem within a couple of weeks.
- Vacuum or sweep them up. The University of California’s Statewide IPM Program recommends vacuuming visible earwigs, and emptying the canister or bag outside afterward so they cannot crawl back in.
- Dry out humid areas. Fix leaky pipes, run a dehumidifier in damp basements or crawl spaces, and dry wet spots under sinks and around tubs. A drier home is the single strongest deterrent.
- Seal entry points. Caulk cracks in the foundation and gaps around windows, doors, pipes, vents, and utility lines. Pay attention to the bottom of exterior doors—a worn weatherstrip is an open invitation.
- Set traps in moist zones. Sticky glue traps work well under sinks and along baseboards. A rolled-up newspaper, a corrugated cardboard tube, or an upside-down flower pot stuffed with damp straw makes an effective DIY shelter trap—check it each morning and dispose of the occupants.
- Dry up the perimeter. Move mulch, leaf litter, wood piles, and organic debris away from your foundation. Make sure gutters and downspouts drain water well away from the house instead of pooling beside it.
Reduce outdoor lighting near doors and windows too. Yellow lights attract fewer insects than white ones, which means fewer earwigs gathering at your entry points.
When To Spray—And When To Skip It
Indoor pesticide sprays are rarely the answer. The UC IPM program is blunt: spraying indoors generally will not prevent earwigs from getting in, and it is not recommended as a preventive measure. If an infestation persists after you’ve controlled moisture and sealed cracks, a registered product applied to cracks, crevices, and baseboards in problem areas can help.
When you do treat, do it safely. Health Canada advises covering any baited pesticide products to protect children and pets, and using dust products only in spots where kids and animals cannot reach treated surfaces. The most common mistake is spraying first and fixing the moisture problem never—that just masks the symptom for a few days. If you’re noticing a persistent problem, have a look at our tested recommendations for the best earwig killer to see which products are worth your money.
If earwigs keep appearing after you’ve dried the house, sealed the gaps, and trapped the stragglers, check the exterior. Persistent indoor sightings usually mean a large outdoor population is pressing against your foundation, and treating that perimeter may be the missing step.
FAQs
Will earwigs infest my house or just wander in?
Earwigs rarely establish a breeding population indoors. They typically wander in from outside and survive only where moisture is high, like a damp basement or under a leaking sink. Fix the moisture and they cannot sustain themselves, which is why drying out the home is the primary control strategy.
Are earwigs harmful to people or pets?
Earwigs are not poisonous and do not spread disease. They may pinch if handled roughly, but the force is rarely enough to break skin. They are primarily a nuisance pest, and their presence indoors usually signals a moisture or entry-point problem rather than a health threat.
Does vinegar or soapy water kill earwigs?
Soapy water kills earwigs on contact by breaking their surface tension, and it works as a quick spot treatment for visible insects. Vinegar is more of a repellent than a killer. Neither solves the underlying problem—you still need to reduce moisture and seal entry points to keep them from returning.
References & Sources
- University of California IPM. “Earwigs.” Recommends vacuuming and explains the limits of indoor pesticide use.
- Health Canada. “Earwigs.” Provides safety guidance for using baited and dust pesticide products.
- North Carolina State University. “Earwigs.” Confirms earwigs rarely establish indoors except in high-moisture areas.
Mo Maruf
I created WellFizz to bridge the gap between vague wellness advice and actionable solutions. My mission is simple: to decode the research and give you practical tools you can actually use.
Beyond the data, I am a passionate traveler. I believe that stepping away from the screen to explore new environments is essential for mental clarity and physical vitality.