How to Get Rid of Earwig Infestation | Dry Out Their World

When earwigs move in, damp darkness is what invited them. The most effective way to get rid of an earwig infestation is to make your property less hospitable: dry out the perimeter, clear away debris and mulch, seal gaps in the foundation, and let traps do the heavy lifting. Pesticides have a place, but they work far better as a supplement than as your first move.

Get the moisture and shelter under control and most infestations collapse on their own. Here’s the order of operations that actually works.

Why Earwigs Keep Coming Back

Earwigs are drawn to exactly what most yards provide near the foundation: leaf litter, heavy mulch, wood piles, weeds, and damp soil. They hide in these spots during the day and feed at night. If that shelter stays in place, no amount of spraying will stop new earwigs from moving in.

The fix starts outside. Clear a bare strip of soil or gravel next to the foundation, pull mulch and vegetation back from the wall, and keep gutters and downspouts directing water well away from the house. The University of California’s Integrated Pest Management program stresses that reducing moisture and hiding places is the foundation of any control plan.

The Trap Method That Works Overnight

Trapping is the fastest way to knock down a visible population without chemicals. The classic setup: a low-sided can baited with vegetable oil plus a few drops of bacon grease or fish oil, sunk into the ground near plants. Earwigs crawl in, can’t climb back out, and drown.

Rolled newspaper, bamboo tubes, and short pieces of hose laid near the garden work the same way — earwigs pile in by morning. Place traps just before dark, then empty them into a bucket of soapy water at sunrise. Check them daily; a trap left unemptied becomes a breeding site rather than a solution.

When To Reach For Pesticides (And When Not To)

Outdoor perimeter treatments can help when traps and sanitation aren’t enough. Treating an 18–24 inch band of the foundation wall and a 3–6 foot strip of soil around the building targets the earwigs’ travel routes. Products containing permethrin, bifenthrin, spinosad, or diatomaceous earth are all labeled for earwig control — always follow the exact label directions.

Indoor pesticide use is a different story. Spraying inside does nothing to stop earwigs from entering and isn’t recommended for prevention. Indoors, the right tool is a vacuum or broom, plus sealing cracks and gaps with caulk. Replace white outdoor lights with yellow ones too — they’re far less attractive to earwigs and other night insects.

Common Mistakes That Keep The Infestation Alive

• Spraying indoors as prevention. It doesn’t block entry and leaves residue where you don’t want it. Seal the gaps instead.
• Leaving mulch, wood piles, or leaf litter against the foundation. That’s a five-star hotel for earwigs. Keep the perimeter clear.
• Allowing the perimeter to stay damp. Overwatering, clogged gutters, and slow leaks all keep earwigs comfortable. Fix the moisture source.
• Setting traps and forgetting them. An unemptied trap stops catching earwigs and starts breeding them.

When traps and sanitation aren’t enough and you want a targeted product recommendation, our tested earwig pesticide roundup covers the options that actually hold up in real yards.