Use oil-bait cup traps at dusk and empty at dawn; clear damp hiding spots so night feeding drops within a week.
Earwigs keep a predictable schedule. They tuck into tight, dark shelters by day, then roam after dusk to nibble soft leaves, petals, and fruit. When the local group swells, you wake up to ragged holes in seedlings, chewed blooms, and scuffed produce. You don’t need fancy gear to stop that. You need the right traps in the right spots, checked on a steady rhythm.
This plan is built around catching, not guessing. You’ll set two trap styles, place them where earwigs already travel, and pair trapping with small cleanup steps that make beds less inviting. Most gardens show a clear change in damage after several nights.
How To Catch Earwigs In The Garden? With Two Night Traps
Earwigs do two things that traps can use against them. They seek snug hideouts near dawn, and they follow food smells at night. So you’ll run a hide trap and a bait trap together. Each catches a different slice of the nightly traffic.
Trap 1: Rolled Paper Hide Trap
Roll a sheet of newspaper or corrugated cardboard into a loose tube. Secure it with string or a rubber band. Lay it on soil near the plants that show fresh bites. At dawn, lift the roll and tap its contents into a bucket of soapy water, or move the earwigs well away from your beds.
Health Canada lists rolled cardboard, stuffed flowerpots, bamboo canes, and hose sections as simple shelter traps that work when checked often.
Health Canada trapping steps for earwigs outline several shelter-trap options and the morning shake-out routine.
Trap 2: Oil-Bait Cup Trap
Use a shallow can or plastic cup with smooth sides. Add a thin layer of vegetable oil. Mix in a tiny dab of fish-based bait, pet food gravy, or bacon grease. Sink the container so the rim meets soil level. Earwigs climb in, slip on the oil, and can’t climb back out. Empty and reset each morning.
Small Setup Details That Raise The Catch
- Place the cup where it won’t fill with irrigation spray.
- Use just a smear of bait. Too much turns into a mess and draws other scavengers.
- Reset daily. Old bait dries out and oil gets gritty.
Spot The Real Hot Spots Before You Place Traps
Earwigs hug edges and shade. They rarely cross wide, bare soil when there’s a border to follow. Before night one, take five minutes to map the likely routes. You’ll place traps on those routes, not in a random pattern.
Quick Signs It’s Earwigs
- Damage shows up overnight and looks quiet during daylight.
- Leaves have irregular notches and holes, often on softer edges.
- Petals on dahlias, zinnias, marigolds, and similar blooms look torn by morning.
- Lifting a board, pot, or thick mulch reveals a group that scatters fast.
Best Trap Placement Patterns
- Along bed borders, next to boards, stones, and raised-bed frames.
- Under leaf canopies where shade stays late into the morning.
- Near drip lines, hoses, and damp mulch where day shelters form.
- Right beside the plant that’s getting chewed, not ten feet away.
How Many Traps To Start With
Start with a number you can check daily. A solid baseline is one trap set for each 6–10 feet of bed edge where damage shows. If you catch nothing for two mornings in a row, move that trap closer to shelter or to a fresh damage spot.
Run A Seven-Night Routine That Doesn’t Drift
Trapping works best as a short sprint. A week is long enough to drain the local group and short enough to stay consistent. Set traps at dusk. Check them early in the morning. Keep the rhythm even on weekends.
Night Setup
- Place paper rolls and oil cups at dusk or in late afternoon.
- Make sure oil cup rims meet soil level so earwigs can climb in.
- Add a small roof over cups if rain is expected: a flat board raised on stones works well.
Morning Check
- Check at dawn, before sun warms the beds.
- Empty catches into soapy water if you’re removing them.
- Refresh oil when it looks dusty or thick.
- Replace paper rolls when they turn soggy.
During each morning check, lift two or three nearby shelters: spare pots, flat stones, or a loose board. If you see a cluster, put that night’s paper roll right beside it.
Trap Options Compared Side By Side
If you want to test options without overthinking, start with one bait trap and one shelter trap, then keep what performs best after a week.
| Trap Type | Where It Works Best | Morning Action |
|---|---|---|
| Rolled newspaper tube | Soil near seedlings and bed edges | Tap into soapy water, replace if soggy |
| Corrugated cardboard roll | Under leaf canopies, beside mulch | Shake out, dry, reset |
| Short hose pieces | Raised bed corners and frame gaps | Dump contents, rinse, reset |
| Bamboo tube shelter | Near shrubs and perennial crowns | Knock into container, reset |
| Oil-bait cup at soil level | Along borders where earwigs roam | Empty and refill oil daily |
| Tuna can oil trap | Near compost, fences, shady paths | Dump and refresh bait daily |
| Upside-down pot with straw | Close to blooms with petal damage | Shake straw into bucket, restuff |
| Sticky barrier on pot rim | Container plants and patio pots | Replace when dusty or full |
| Damp rag bundle | Under low foliage where paper dries out | Shake into bucket, re-wet lightly |
Remove Day Shelters So Traps Stay Productive
Traps catch what’s moving. Shelter cleanup cuts what’s hiding. Do both and your catch stays high for several nights, then drops as the nearby group thins.
Simple Cleanup You Can Finish In One Session
- Lift boards, spare pots, and flat stones off bare soil.
- Pull weeds that form a thick mat at bed edges.
- Rake leaf piles away from tender plants.
- Keep mulch a little back from seedling stems.
- Move compost and wood piles a few feet away from beds when you can.
Watering Choices That Help
Earwigs love damp day shelters. If your schedule allows it, water in the morning so surfaces dry before nightfall. Use drip lines or soaker hoses under mulch instead of frequent overhead watering that wets the whole bed top. You’re not chasing a dry yard. You’re trimming the damp pockets right beside the plants you want to protect.
Protect Tender Plants While The Catch Builds
Traps lower pressure over several nights. If a few plants are getting hammered, add a short-term shield so new growth can bounce back.
Simple Physical Barriers
- Stem collars: press a short ring of smooth plastic into soil around a seedling, with the rim an inch above soil.
- Raised containers: set pots on bricks or pot feet so bases don’t sit on damp ground.
- Clean rims: wipe pot rims so earwigs have less grip on dusty edges.
Check If Another Pest Is In The Mix
Earwig damage often shares the stage with slugs, cutworms, or caterpillars. Do a quick flashlight walk after dark. If you see slugs, adjust bait choices in oil cups so they stay focused on earwigs. If you find cutworms, collars do double duty.
When Earwigs Are Living As Predators
Earwigs also eat smaller insects. If the only damage you see is light nibbling on a few petals, you may choose to trap only near those flowers and leave other areas alone. This keeps some earwigs hunting in shrubs and tree canopies while you protect the plants that matter most to you.
Clemson’s Home & Garden Information Center notes that earwigs often feed on decaying plant material and dead insects, and only turn into plant pests when their numbers get high.
Clemson HGIC notes on earwig feeding describe their habits and why big outbreaks can cause plant injury.
When You Choose A Product, Keep It Tight And Label-True
Some gardens sit next to dense low plantings or damp shade that’s hard to change. If you’ve trapped for a week, cleaned shelters, and you still see steady chewing, you may decide to use a product labeled for earwigs on the plants you’re treating. Spot-treat shelter zones and bed edges instead of spraying each surface.
Read The Label Before You Buy
A label tells you where a product can be used, what it controls, and how to apply it. It also lists protective gear, mixing rates, and re-entry timing. The U.S. EPA has a plain-language page on why label directions matter and what labels contain.
EPA page on reading pesticide labels explains the basics in a clear checklist format.
Spot-Treating Rules That Keep Drift Down
- Apply at dusk or early evening when earwigs start moving.
- Aim at cracks, bed edges, and known shelters, not open blooms.
- Keep sprays off edible parts unless the label lists the crop.
- Stop once traps show low catches and damage is light.
Fix Common Trap Problems
If traps aren’t catching, tweak placement and timing first. Most issues can be fixed the same day.
| What You See | Likely Reason | Fix Tonight |
|---|---|---|
| Paper rolls are empty | Trap is too far from day shelter | Move the roll beside a board, pot, or thick mulch edge |
| Oil cup has dirt on top | Rim is above soil and splash hits it | Sink the cup so the rim meets soil level |
| Cup fills with water | No roof during rain or irrigation | Add a small board roof raised on stones |
| Catch drops after two nights | Local group shifted shelters | Move half the traps to fresh damage spots |
| Only slugs show up | Bait choice draws slugs too | Use a tiny smear of fish-based bait, not wet food |
| Pots still get chewed | Earwigs climb pot sides | Raise pots and add a sticky barrier on the rim |
| Seedlings vanish overnight | More than one pest is feeding | Check for cutworms at dusk and add collars |
| You catch earwigs, damage stays | Too few traps for the area | Add one trap each few feet along the bed border |
Keep Results After The First Week
Once you see fewer fresh bites in the morning, shift from daily trapping to “as-needed” trapping. Set two traps after a warm, damp spell, after heavy mulch work, or when petals start showing new chew marks. Clean up new shelters as they appear, since fresh piles of leaves or boards can restart the cycle.
If you want a long-range routine, the University of New Hampshire notes that tuna cans with oil, plus rolled paper traps in shady areas, can be used to monitor and trap earwigs when checked in the morning.
UNH earwig monitoring and trapping notes describe oil-can traps and morning checks for home gardens.
References & Sources
- Health Canada.“Earwigs.”Lists shelter-style traps (cardboard rolls, pots with straw, bamboo, hose) and advises regular morning emptying.
- Clemson Cooperative Extension, Home & Garden Information Center.“Earwigs (HGIC 2421).”Describes earwig habits, what they eat, and when high numbers can cause plant injury.
- U.S. EPA.“Keep Safe: Read the Label First.”Explains what pesticide labels contain and how they guide safe, legal use.
- University of New Hampshire Extension.“Earwigs Fact Sheet.”Recommends oil-can traps and rolled paper traps placed in shady areas and checked in the morning.