How To Eliminate Earwigs In The Garden? | Stop Earwig Swarms

Earwigs can turn new seedlings into lace overnight. The fix isn’t mystery powder. It’s a short, repeatable routine that matches earwig behavior: they feed after dark and pack into cool, damp shelters by day.

You’ll get better results by doing a few simple things well, every day, for two weeks. Start tonight with traps. Then strip the nearby hideouts and keep the soil surface from staying wet at dusk. That mix cuts numbers fast and keeps fresh chewing from returning.

What Earwigs Do And What They Don’t

Earwigs chew soft plant parts: petals, young leaves, ripe strawberries, and corn silk. They also eat other small insects at times, so the target is “no damage,” not “zero earwigs.”

They hide by day. Midday scouting can fool you. Check after dusk with a flashlight, or lift mulch, pots, boards, and dense plant crowns early in the morning.

Fast Clues That Point To Earwigs

• Shallow holes and ragged edges, often on low plants and blooms.
• Overnight change: plants look fine at sunset, rough by breakfast.
• Nearby shelters: under pots, edging, boards, or thick mulch.

Why Earwigs Stay In Your Beds

Repeat damage usually means food and shelter sit side by side. Earwigs like dark cover, damp ground, and clutter that stays cool. Deep mulch pressed tight, stacks of pots, loose boards on soil, and weedy bed edges can keep a steady supply right next to your plants.

Outdoor lights can add fuel. Insects gather around bright bulbs, and earwigs follow the buffet. If a light shines on the bed, swap to a warmer bulb and aim it down.

Plants That Get Hit Hard

Seedlings, dahlias, zinnias, lettuce, basil, strawberries, and sweet corn often take the worst chewing. A handful of earwigs won’t wreck a whole yard, but clusters in one corner can.

Eliminating Earwigs In The Garden With Low-Mess Steps

Run this in layers. Trapping cuts the crowd fast. Shelter cleanup stops daytime pileups. Barriers keep earwigs off the plants you value most while the numbers drop. Keep the routine going for 10–14 nights so you catch late hatch too.

Step 1: Trap Every Night For Two Weeks

Trapping is the quickest way to shrink the population. UC’s Integrated Pest Management guidance puts daily trapping and shelter reduction at the center of yard control. UC IPM earwig management notes also stress that traps work best when you keep setting them until catches fall.

Oil Can Trap (High Catch)

• Use a low tin (tuna or cat-food can).
• Add 1/2 inch of vegetable oil, then a splash of soy sauce for scent.
• Set cans at soil level near damaged plants at dusk.
• At sunrise, tip the catch into soapy water and refresh bait.

Rolled Paper Trap (Fast Setup)

• Roll damp newspaper or corrugated cardboard.
• Place it beside the bed at dusk.
• In the morning, unroll into soapy water.

Use more traps than you think. One trap catches a few. Ten traps can change the bed. Place them near damage and near likely shelters like pot stacks and edging.

Step 2: Strip Day Shelters Near Tender Plants

Earwigs don’t travel far when cover sits close to food. Clear hiding spots within a few feet of your soft crops and blooms.

• Lift boards, loose bricks, and spare lumber off the soil. Store them on a rack.
• Pull weeds and thick ground cover at bed edges.
• Thin mulch so it stays airy. Keep mulch back from stems.
• Empty saucers under pots after watering.

Step 3: Shift Water Timing

Water early so the surface dries by evening. Drip lines are handy here because they wet the root zone without soaking the whole bed. If you can’t change timing, water less often but deeper, then let the top inch dry between runs.

Step 4: Guard The Plant You Refuse To Lose

Pick the plant that matters most and protect it while trapping works in the background.

• Copper tape on clean, dry rims of pots can slow climbing insects.
• Sticky trunk bands can block earwigs from moving into fruit canopies; Washington State University describes trunk banding and notes earwig activity peaks after sunset. WSU earwig orchard guidance lays out banding tips and timing.
• Row cover on seedlings can stop chewing while numbers drop nearby.

Control Options Compared (Pick Your Mix)

Many gardens need only traps plus cleanup. If you’re protecting seedlings or prized blooms, combine methods so each one does less work.

When A Product Can Help And How To Use It Well

If you still see new damage after a week of heavy trapping and cleanup, a bait may be the next move. Some iron phosphate baits list earwigs on the label in certain places. Read the label and match it to where you’ll apply it.

RHS notes that earwigs can prey on aphids in some settings, so wiping them out across the whole yard can backfire on fruit trees. RHS earwig advice leans toward tolerating small numbers, then stepping in when damage crosses your line.

Rules For Any Bait Or Spray

• Use the label as your rulebook: location, rate, timing, reentry, and storage.
• Place baits where earwigs travel: along bed edges, under dense plants, near shelters.
• Avoid spraying open blooms. Night feeders hide in tight spots by day, so broad sprays often miss the target.

If you choose a spray, aim for cracks, mulch edges, and shelter zones at dusk when earwigs are out. Leaf-only spraying at noon tends to miss the hiding spots.

If you’re the type who likes a one-page reference, UC’s Pest Notes PDF lays out trap designs and placement ideas in a printable format. UC IPM Pest Notes on earwigs is handy to keep on your phone while you set traps.

Garden Hotspots That Keep Populations High

If traps catch steady numbers night after night, there’s often a “hotel” nearby. Find it and the count drops.

• Pot stacks: knock out damp soil clinging inside rims.
• Wood mulch against borders: rake it back a few inches and let the edge dry.
• Compost and leaf piles: keep them away from seed beds; use a lidded bin if possible.
• Drip line leaks: fix small drips that keep one patch wet all night.
• Dense crowns: thin old leaves at the base of perennials after bloom.

Seasonal Plan So They Don’t Bounce Back

Earwig pressure shifts with weather and plant growth. A simple seasonal rhythm keeps them from building up right next to your crops.

Common Mistakes That Keep Earwigs Winning

• Too few traps. Earwigs pile into the same shelter, so you need enough stations to catch clusters.
• One-night trapping. A single night won’t dent the numbers.
• Mulch packed tight against stems and edging.
• Watering near sunset.
• Spraying leaves only while shelters stay untouched.

A Simple Two-Week Reset

Run this for 14 nights and keep it plain:

1. Set 8–20 traps around the damage zone at dusk.
2. Empty traps each morning and refresh bait.
3. Tidy one shelter zone daily: pot stacks, board piles, thick mulch edges.
4. Water earlier so the surface isn’t wet at night.
5. Use a barrier or row cover on the plant that matters most.

Most gardens see catches drop by the end of week one. Stick with it through week two to catch late hatch and stragglers.

Quick Check: Is It Even Earwigs?

Slugs leave shiny trails. Caterpillars leave droppings and chew higher up. If you’re unsure, do a flashlight check after dark. You’ll see the culprit fast.

Tonight’s Checklist

• Place oil traps near damage and near shelters.
• Pull one piece of clutter off the soil.
• Rake mulch back from stems and borders.
• Water in the morning.
• Protect seedlings with cover or a clean barrier.

Send us your feedbackTell us what you thought about this post

⚠Please use a real email you check. If it's fake or mistyped, your message won't reach us and we can't reply — wrong addresses are rejected automatically.

Name *Email *

Your comment *

Quick check — what is …? *

Send feedback