Earwigs back off when you dry out their hiding spots, trap hard for a week, and use labeled baits only where fresh chewing keeps returning.
Earwigs are night feeders that spend the day wedged into cool, tight, damp shelters. When numbers climb, they can rag leaves, clip seedlings, and chew flower petals. You don’t have to treat every square foot. You just need to work where they hide and travel.
This plan stays practical: confirm the culprit, cut the shelter that’s boosting their numbers, trap daily, then protect the few plants they keep targeting.
Spot The Damage Before You Treat
Earwig chewing looks rough. Leaves may have irregular holes and shredded edges, and seedlings can get chewed down near the soil line. Slugs and caterpillars can leave similar marks, so a quick check saves time.
Do A Night Flashlight Check
Go out 30–60 minutes after dark with a flashlight. Watch the damaged plant, then the soil line, then the mulch. Earwigs move fast and dart into shelter, so look for repeated activity in the same corner of the bed.
Use A Sunrise Shelter Trap
Place a short board, a folded piece of damp cardboard, or a small towel right beside the damaged plant at dusk. Check at sunrise. If earwigs are driving the damage, you’ll often find them tucked underneath.
What Makes A Bed Earwig-Friendly
Earwigs pile up where three things overlap: moisture at the surface, tight hiding gaps, and easy food. Heavy mulch pressed into the soil, leaf litter, stacked pots, boards on the ground, and thick groundcover give them all-day shelter. Deep watering late in the day can keep the surface wet right when they start feeding.
Getting Earwigs Out Of Your Garden Beds With Less Mess
Use three passes: cut daytime shelter, trap at night, then block routes to your most chewed plants. It’s simple and it scales from one raised bed to a whole yard.
Pass 1: Remove The Day Shelter
- Pull mulch back from stems. Leave a bare ring around tender plants during peak chewing weeks.
- Lift clutter off the soil. Store pots, boards, and spare lumber on a rack, gravel strip, or pallet.
- Clear bed edges. Rake out damp leaf piles and rotting plant scraps along fences and borders.
- Shift watering to morning. The surface dries by nightfall, which makes hiding spots less inviting.
Pass 2: Trap Overnight, Empty At Sunrise
Earwigs seek narrow, dark gaps. Give them a better hideout than your basil, then empty it daily. Washington State University lists rolled newspapers and boards as useful tools for trapping and checking earwig activity.
WSU Hortsense earwig management options
Rolled Paper Trap
- Roll newspaper or corrugated cardboard into a tube.
- Lightly dampen it so it stays attractive overnight.
- Place it beside the hot zone at dusk.
- At sunrise, shake the tube into a bucket of soapy water.
Board Trap
Lay a flat scrap board on the soil near the damaged plants. In the morning, lift it and scrape earwigs into soapy water. Move the board each night so it doesn’t turn into a permanent shelter.
Oil Trap For Heavy Pressure
For big numbers, set a shallow can in the soil so the rim sits at ground level. Add a small pool of vegetable oil. A smear of fish-based pet food on the rim can draw earwigs into the trap. Check and refresh daily.
Pass 3: Block The Climb
Barriers cut damage while you’re trapping, since many earwigs travel from soil to plant each night.
- Sticky bands on stakes or trunks. Utah State University Extension’s IPM notes mention exclusion on trees using sticky adhesive products when earwigs climb up from the ground.
- Dry abrasive rings. A ring of diatomaceous earth can deter crawlers while it stays dry. Reapply after rain or heavy watering.
- Seedling collars. A plastic cup with the bottom removed can protect a tender stem for a week or two.
Utah State University IPM notes on European earwig monitoring and exclusion
When Traps Aren’t Enough
If you’re still catching earwigs daily and fresh chewing continues after 7–10 nights, add a product that works inside the hiding zones. That usually means a bait, or a spot treatment labeled for earwigs in cracks, crevices, and harborages. University of Wisconsin Extension lists habitat reduction and trapping as core steps, with insecticides as an option when damage keeps going.
University of Wisconsin Extension: “Controlling Earwigs” (PDF)
Earwig Control Options Compared
| Method | Where It Fits | Practical Notes |
|---|---|---|
| Mulch pull-back and debris cleanup | Seedling rows, herb patches, bed edges | Keep mulch elsewhere for weed control; leave a bare ring only near the plants being hit |
| Morning watering or drip irrigation | Beds that stay wet at night | Deep, spaced watering helps; avoid keeping the surface damp until midnight |
| Rolled paper or cardboard traps | Raised beds, containers, small hot zones | Empty daily for a week; replace when soggy or moldy |
| Flat board traps | Fence lines, borders, groundcover edges | Move nightly; scrape into soapy water at sunrise |
| Oil traps | Patio edges, compost corners, dense plantings | Refresh oil; place away from places where pets can reach it |
| Sticky bands on trunks/stakes | Fruit trees, trellised crops, tall ornamentals | Keep bands clear of dust and leaves; follow product directions for bark contact |
| Granular or pellet baits labeled for earwigs | Mulched beds with steady reinvasion | Apply to hiding strips, not blooms; follow label timing and watering directions |
| Targeted perimeter spray labeled for earwigs | Hard edges, cracks, dense harborages | Use spot treatments; avoid open flowers; follow label PPE and re-entry rules |
Use Baits And Sprays With Precision
Baits and residual sprays work best when you place them where earwigs spend the day. That’s under groundcover edges, inside mulch strips, beneath boards, and along cracks where moisture lingers. Treating the leaves alone rarely fixes the problem.
Choose The Right Form
- Granular baits: best for mulch and soil hiding zones.
- Crack-and-crevice sprays: best for hardscape edges and structural gaps where earwigs retreat.
Keep Treatments Off Blooms
Apply to soil and shelter zones, not petals or open flowers. Treat at dusk or dawn, and stick to the label for the site and crop. If kids or pets use the yard, place baits in sheltered spots where they won’t be reached.
Protect Your Most Vulnerable Plants This Week
While trap counts drop, protect the plants earwigs hit hardest: seedlings, soft greens, and certain flowers.
Quick Shields That Work
- Use row fabric for lettuce, brassicas, and basil until stems thicken.
- Lift strawberries and low fruit off the soil with straw or a mesh cradle.
- Harvest leafy greens in the evening, before night feeding starts.
Fix The Problem By Symptom
| What You See | Likely Driver | Move For Tonight |
|---|---|---|
| Seedlings chewed down; earwigs under mulch at sunrise | Shelter right at the stem zone | Pull mulch back, set two rolled traps, water at dawn |
| Petals chewed on dahlias or zinnias | Night climbers using stems and stakes | Trap at the base, add a sticky band to stakes, clear nearby shelter |
| Damage continues after a week of trapping | Reinvasion from a nearby hiding strip | Place labeled bait in that strip, keep traps running every other morning |
| Earwigs stacked near compost or wood piles | Damp organic piles close to beds | Move the pile farther from tender crops, trap along the travel line |
| Fruit on the soil shows shallow chew marks | Direct contact points and hiding under fruit | Lift fruit, remove nearby litter, set an oil trap beside the patch |
| Earwigs show up around patio lights | Lights draw insects, which draws earwigs | Switch to warm, shielded bulbs and trap away from seating areas |
Keep Them From Coming Back
Once chewing slows, you can keep pressure low with small habits that don’t feel like weekend chores.
Keep Storage Dry
Stack pots, lumber, and bagged soil on a shelf or pallet so air can pass underneath. Earwigs avoid dry, open ground.
Run One Trap As An Early Warning
Leave a single board trap in your usual trouble corner and check it weekly during warm months. If counts climb, start the trap cycle before damage spreads.
Safety Notes For Any Pesticide Use
Read the label, match the product to the crop and site, and treat only the area needed. Keep sprays off edible parts unless the label allows that use. Keep people and pets out until the label’s re-entry time has passed.
A Simple 7-Day Plan
- Night 1: Confirm earwigs with a flashlight check and a board trap.
- Days 2–3: Pull mulch back, clear damp clutter, shift watering to morning.
- Nights 2–7: Set rolled paper traps beside hot zones; empty at sunrise.
- Day 4: Add a second trap on the bed edge where catches are highest.
- Day 7: If fresh chewing continues, place a labeled bait in the hiding strip and keep traps running every other day.
Michigan State University’s IPM note sums up the timing that makes this work: earwigs hide in mulch and under objects by day and feed at night, so control improves when you target the hiding places and trap on a steady schedule.
Michigan State University IPM: Earwig
References & Sources
- Washington State University Hortsense.“Common Insects and Mites: Earwigs.”Describes earwig habits and lists non-chemical trapping options such as rolled paper and boards.
- Utah State University Extension (IPM).“European Earwig.”Shares monitoring methods and exclusion options like sticky barriers for climbing earwigs.
- University of Wisconsin Extension.“Controlling Earwigs” (A3640 PDF).Outlines habitat reduction, trapping, and when insecticides may be used for ongoing damage.
- Michigan State University Extension.“Earwig – Integrated Pest Management.”Summarizes earwig activity patterns that guide trap timing and targeted treatments.