BuzzSkito Mosquito & Tick Control Specialists · Published July 28, 2026 · Updated July 30, 2026
Why the Earwig Aisle Is So Thin
Shopping for an earwig killer feels strangely bare compared with the ant and cockroach sections, and there is a structural reason worth understanding before you spend anything: there is no earwig bait, and there never will be.
Ant and cockroach control is dominated by baiting because those insects share food socially — a forager takes a slow-acting toxicant back and it moves through the colony, killing insects you never see. Earwigs are not eusocial. A female earwig guards her own eggs and tends her own first-stage nymphs, but there is no colony, no food-sharing network, and nothing for a bait to travel through. Every single earwig has to individually contact the thing that kills it.
That one fact reorganises the entire shelf. Every earwig product is a one-insect-at-a-time mechanism, which means the only two questions worth asking about anything in your cart are how many earwigs will physically touch this and how long does it stay lethal. A dry film of diatomaceous earth across a threshold scores well on both. A contact aerosol scores well on the first, for the seconds it stays wet. And an oil tin sunk into the bed — which pulls earwigs in by odour, at night, in the exact place they live — quietly outscores nearly everything you can buy, which is why the honest version of this page has to start by talking you out of a purchase.
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Check current Canadian availability of the short list that is genuinely worth buying:
The Purchase to Skip: Commercial “Earwig Traps”
We are an affiliate publisher and we will still say it plainly: do not buy an earwig trap. There is no widely available consumer trap engineered for this insect the way the wasp market has genuine lure traps. What gets sold under the name is a tight dark space or a drowning liquid — which is a rolled newspaper tube or a tin of cooking oil, priced up.
Build the tin instead. Sink a shallow can — tuna or cat food — so the rim sits flush with soil level, add a centimetre or two of vegetable oil plus a splash of soy sauce or bacon grease, and place it between the harbourage and whatever you are protecting. The fermented, oily odour is the attractant; the oil defeats surface tension so nothing climbs out. Use a lidded container with entry holes at soil level if you have a curious dog or a toddler. Full technique — rim height, placement, the rolled-newspaper variant, and why running traps for two to three consecutive nights is worthless while two to three consecutive weeks works — is in our earwig guide.
The one off-the-shelf trap worth money is a multi-pack of flat glue boards, and you buy those as instrumentation rather than control: laid tight to the baseboard in the basement, garage and behind exterior doors, the catch pattern tells you which gap is actually live and whether your sealing worked.
The Product Worth Buying: Which DE, and What Goes With It
If you want a product that genuinely kills earwigs, this is it. Diatomaceous earth is fossilised diatom silica ground into an abrasive, ultra-absorbent powder that scours and soaks up the waxy cuticle layer holding an insect’s moisture in. An earwig that crosses a dry film loses water it cannot replace and dies, typically within a day or two rather than instantly. Because nothing is being metabolised, no earwig can develop resistance, and the powder does not expire.
The buying decision here is legal, not mineralogical. Insecticidal DE is a registered pesticide in Canada, and the registered consumer brands you will actually find are Safer’s Diatomaceous Earth, Knock Down, and Doktor Doom Be Green. Each carries a PCP registration number and label directions that legally govern where and how you may apply it. “Food-grade” DE sold as an anti-caking agent or feed additive is chemically similar and legally different: no registration, no PCP number, no pest-use directions. Never buy pool-grade DE for pest control — it has been calcined, which converts much of the silica to a crystalline form that is a genuine respiratory hazard, and which also makes it worse at absorbing insect wax.
Budget for the duster in the same order. What kills is a thin, barely visible film; insects detect and walk around a visible pile, so a heavy application is worse than a light one, and you cannot lay a light one out of the bag. A bulb or hand duster is inexpensive and it is the difference between a bag that works and a bag that sits in the garage. Wear a dust mask while applying.
Where it may legally and usefully go — and this is a severe, pest-specific limit rather than a footnote, because DE stops working the instant it is damp and earwigs live in wet mulch and dew-soaked soil. Dry crossings only: under exterior door thresholds and along garage sill plates; inside crawl spaces and along unfinished basement perimeters; under decks, porches and overhangs the rain does not reach; window wells once the leaves are out of them; and the bare gravel band at the foundation, which is exactly why creating that band is worth the hour with a rake. Reapply after rain and heavy dew. Grade differences and full registered-brand comparison are in our Canadian diatomaceous earth buyer’s guide.
Perimeter Sprays and Granules: What Canada Actually Allows You to Buy
This is where most people arrive after searching “earwig killer,” and it is where the Canadian shelf diverges hardest from the American one. The product most Canadians are actually looking for — the bifenthrin Ortho Home Defense Max Insect Killer for Indoor & Perimeter that dominates US hardware stores — is not registered with Health Canada’s Pest Management Regulatory Agency, so it is not legally sold at Canadian Tire, Home Depot Canada, or Amazon.ca. Provincial rules narrow it further, and they are not one national rule. Ontario limits cosmetic lawn and garden use to a permitted list of lower-risk active ingredients — the old Class 7-to-11 lettering has been retired in favour of that list — and a synthetic pyrethroid like bifenthrin is not on it. Quebec runs a separate regime entirely, under its own Code de gestion des pesticides, which restricts a narrower, lawn-focused set of ingredients rather than using Ontario’s classes. The practical result for a homeowner is the same in both: a product that is an ordinary hardware-store buy in Buffalo is unregistered here, and that kind of chemistry is not something you may apply cosmetically to a lawn or garden in Mississauga.
What you can legally buy here for crawling insects around a home is the reduced-risk end of the market — and the shortlist is narrower than it first looks, because the use site printed on the label matters as much as the pest list. Doktor Doom Residual, Wilson One Shot, and Raid Bug Barrier are sold in Canada and labelled for treating the outside of a building, which is the job here. Ortho’s Canadian Bug B Gon ECO line is registered too, but read what it is actually for: the Canadian ECO products are directed at plants — garden and ornamental plants, vegetables, fruit trees, greenhouse ornamentals — not at a foundation wall. It belongs in a garden bed, not in your perimeter band, and putting it there anyway is exactly the label violation this guide keeps telling you to avoid. Whichever registered structural product you use, it will kill earwigs it contacts and give a short residual on a treated band. None will give you the multi-week barrier that American guides describe, because that chemistry is not on our consumer shelves. We break the whole line down brand by brand in our Ortho Home Defense Canada review.
Granules deserve a specific note because the brief people arrive with is usually “spread granules around the foundation.” A granule is a delivery format, not an active ingredient — a carrier pellet coated with insecticide that releases as it wets from dew, rain, or watering-in. In principle it is a sensible way to treat a band of ground you cannot easily spray. In Canadian practice, the consumer granular crawling-insect market is thin for exactly the reason above: the long-residual pyrethroids that make American granules effective are largely unavailable to homeowners here. If you find one, the test is the same as for anything else — a PCP registration number on the label, a listing that is sold and shipped within Canada, and a use printed on the label that matches what you intend to do.
If you do buy a registered perimeter product, three rules decide whether it does anything: apply at dusk, because earwigs are strictly nocturnal and a morning application spends the day degrading before the target moves; treat the band, not the lawn — the bottom 30–45 cm of the foundation wall, the ground 30–60 cm out from it, door thresholds and around window wells; and remember that the label is the law, overriding every tip online including ours. The use sites, setbacks from water features and edible beds, re-entry intervals for children and pets, and the approved pest list are all binding. A product can be perfectly legal and still be the wrong product, because the pest is on the label and the place you want to spray is not.
The Hardware List: What Ends It Instead of Killing It
The highest-return item most Canadians can buy for earwigs kills nothing at all, and it belongs on a page about killers for a specific reason: earwigs cannot establish indoors. A heated Canadian house is far too dry, and there is no food base comparable to the decaying matter, algae and small insects they eat outside. Every earwig in your bathtub is an incidental invader that walked in through a gap and would have died or left within days anyway. You are not buying a treatment. You are buying a door.
- Door sweeps for every exterior door, plus a garage door bottom seal. Measure the door width and check the threshold type before ordering. A flat insect needs a few millimetres, which makes this the highest-yield purchase on this page for indoor sightings.
- Exterior-grade silicone. For hose bibs, dryer vents, AC line sets, cable and gas entries, foundation cracks, and the seam where a deck ledger meets the wall.
- Window-well covers, and clean gravel. Empty the leaves, add gravel so the well drains, fit a cover. In a finished basement this is frequently the entire fix by itself.
- Downspout extensions and gutter guards. The genuine root-cause buy. A packed eavestrough is an elevated earwig nursery, and a downspout dumping at the wall keeps the bed below it saturated all season.
- Nothing, for the mulch line. Pulling mulch back 15–30 cm from the foundation and leaving a bare band of gravel or stone is the single change that outranks every product here, and it needs a rake you already own. It is also the one outdoor location where a DE treatment actually stays dry enough to work.
If earwigs keep appearing indoors for weeks despite good sealing, stop buying pest products and start looking for water — a wet crawl space, a leaking foundation wall, a slow plumbing drip. In a chronically damp basement a dehumidifier does the same structural favour it does against silverfish; our basement dehumidifier guide covers sizing for Canadian basements.
Buying for a Garden, Where the Label Points the Other Way
If earwigs are chewing dahlias, marigolds, zinnias, lettuce, basil or seedlings, the purchase decision changes — and the first thing to buy is nothing. Slugs produce almost identical ragged holes, and the reliable diagnosis is a flashlight at ten or eleven at night rather than a product. Whatever is on the leaf is your answer.
If it is earwigs, trapping is the right response here specifically because it puts no chemistry near your food: ring the affected plants with oil tins and newspaper tubes for two to three weeks, water in the morning so the bed is at its driest during the hours earwigs forage, and use collars on vulnerable seedlings. If you do reach for a registered product in a bed, note that the label points the opposite way from the perimeter section above. Ortho’s Canadian Bug B Gon ECO line is the plant-directed one — its Canadian labels name garden and ornamental plants, vegetables, fruit trees and greenhouse ornamentals as use sites — while the structural products above are labelled for the outside of a building and not for your lettuce. And temper the expectation even where it is the right product: the ECO line is a potassium-salt soap or a canola-oil-and-pyrethrin contact spray, so it kills what it directly wets while it is wet and leaves essentially nothing behind, which is why a spray over a plant an earwig will not visit until midnight mostly waters the plant.
One argument against the sale, because it is true: you may not want to eliminate them. European earwigs are meaningful predators of aphids, mites and insect eggs, and in commercial pear and apple production they are deliberately conserved because they help suppress pests like pear psylla and woolly apple aphid. Trap hard where they are chewing your dahlias; leave the ones living in the shrub border to work.
What Not to Buy at All
Not buying these is worth more than most of what you could buy:
- Purpose-marketed “earwig traps.” A tight dark space or a drowning liquid — a rolled newspaper and a tin of oil, priced up.
- Ultrasonic plug-in repellers. No credible evidence for any household pest. We took this apart in our ultrasonic pest repeller review.
- Bug zappers. They electrocute flying insects drawn to UV. Earwigs are ground-crawling nocturnal insects that never approach one, while the zapper kills large numbers of harmless moths and beetles. See do bug zappers work in Canada.
- Essential-oil and vinegar sprays. A few hours of repellency while the surface stays wet, no residual, no effect on the population under the mulch, and a real risk of burning foliage.
- Indoor total-release foggers. The earwigs are produced outside. Fogging the basement treats the wrong building — all of the residue, none of the source.
- Grey-market US pesticides. A marketplace listing shipping an unregistered American formula into Canada is not a bargain: it is an unregistered pesticide with a US-only label, it can be held at the border, and its cosmetic outdoor use may be prohibited in your province regardless.
- Whole-lawn broadcast insecticide. Ineffective against an insect that lives at the foundation and in beds, wasteful, and restricted for cosmetic use across much of Canada.
When to Stop Buying and Call Someone
For the overwhelming majority of Canadian households, earwigs do not warrant a paid pest-control program, and we would rather lose the referral than pretend otherwise — BuzzSkito treats mosquitoes and ticks and does not sell earwig service. A registered bag of DE, a bulb duster, two door sweeps and a tube of exterior silicone is a single modest hardware run, and the traps doing the heaviest lifting are made from tins already in your recycling. Any company that quotes a recurring spray schedule without first walking your mulch beds, window wells, downspouts and eavestroughs is selling the wrong thing.
The situations that genuinely justify a call: earwigs entering by the dozens daily for weeks despite proper sweeps, caulking and mulch pullback — a pattern that usually points at a structural moisture or drainage fault, where the right professional may be a waterproofing contractor rather than an exterminator; a food premises where any insect presence is a health-inspection issue; a nursery or market garden taking real crop loss; or ladder work on eavestroughs and window wells you should not be doing yourself. For what general-pest work typically costs in Canada, so you can sanity-check a quote, see our Canadian pest control cost guide.
Frequently Asked Questions
What should I buy to kill earwigs in Canada?+
A short list: a PMRA-registered insecticidal diatomaceous earth (Safer’s Diatomaceous Earth is widely stocked, with Knock Down and Doktor Doom Be Green as registered alternatives), a bulb duster to apply it, door sweeps and a garage door bottom seal, and — if a wave is crossing the foundation right now — a Canadian-registered residual labelled for the outside of a building. That is genuinely the whole list. The catch worth knowing before you order: the single most effective earwig killer is not a product at all. A shallow tin of vegetable oil with a splash of soy sauce, sunk flush to soil level in the bed, out-kills anything on the shelf because it works on the insect where it lives, at night, rather than where you happen to spray.
Is a commercial earwig trap worth buying?+
Not really, and we would rather say so than sell you one. There is no widely available consumer trap engineered specifically for earwigs the way the wasp market has purpose-built lure traps, and the generic crawling-insect traps marketed for the job are doing exactly what a rolled newspaper tube or an oil-filled tin does — offering a tight dark space or a drowning liquid — for considerably more money. Spend the money on a bulb duster, a door sweep, and a downspout extension instead. If you want an off-the-shelf item that helps, buy flat glue boards, but treat them as instrumentation: they tell you which entry point is live and whether your sealing worked, rather than reducing the population.
Which diatomaceous earth should I buy, and what else do I need with it?+
Buy DE that is sold as an insecticide and carries a PCP registration number on the Canadian label — the registered consumer brands you will actually find here are Safer’s Diatomaceous Earth, Knock Down and Doktor Doom Be Green — and budget for a bulb or hand duster in the same order. The duster is not an accessory: what kills is a barely visible film, insects walk around visible piles, and you cannot lay a thin film out of the bag. Quantity is rarely the constraint; one consumer bag will treat a house many times over. Avoid "food-grade" DE, which is sold as an anti-caking agent or feed additive with no pesticide registration and no legal pest-use directions, and never buy pool-grade for pest control — it has been calcined, contains crystalline silica, and is both a genuine respiratory hazard and worse at absorbing insect wax.
Will Ortho Home Defense or Raid kill earwigs in Canada?+
The Canadian versions will kill the earwigs they contact; the famous American version is not sold here. Ortho’s bifenthrin "Home Defense Max Insect Killer for Indoor & Perimeter" — the product most Canadians are actually searching for — is not PMRA-registered, and Ontario now limits cosmetic lawn and garden use to a permitted list of lower-risk active ingredients that does not include synthetic pyrethroids such as bifenthrin. (Quebec restricts lawn-use ingredients separately, under its own Code de gestion des pesticides, so the rule is provincial rather than national.) What is legally sold in Canada for crawling insects around a home is a narrower set than the American aisle, and the use site on the label matters as much as the pest list: Doktor Doom Residual, Wilson One Shot and Raid Bug Barrier are sold here and labelled for treating the outside of a building. Ortho’s Canadian Bug B Gon ECO line is registered too, but its Canadian SKUs are directed at plants — ornamentals, vegetables, fruit trees, greenhouse plants — rather than at a foundation wall, so it belongs in the garden and not in your perimeter band. All of them will drop an earwig on contact. None of them fixes the damp harbourage that is producing the earwigs in the first place.
Is there an earwig bait like there is for ants and cockroaches?+
No, and understanding why saves you a lot of shopping. Ant and cockroach baits work because those insects share food socially — a forager carries a slow-acting toxicant home and it moves through the colony. Earwigs are not eusocial. A female guards her own eggs and early nymphs, but there is no colony, no trophallaxis, and no food-sharing network for a bait to travel through. Every earwig has to individually contact or eat the product, which is why the entire earwig market is contact products, dusts, and traps, and why no manufacturer has ever produced the earwig equivalent of a roach gel. It also means that trapping — which removes individuals one by one — is not the weak option here; it is structurally the same mechanism every product on the shelf uses.
Do earwig perimeter granules work, and can I buy them here?+
Granules are a delivery format, not a magic active — a carrier pellet coated with an insecticide that releases when it gets wet from dew, rain, or watering-in. Spread in a band at the foundation they can knock down a heavy wave of earwigs crossing that band. Three honest caveats for Canada. First, the granular crawling-insect market here is much thinner than in the US, because the long-residual pyrethroids that dominate American granules are largely unavailable to Canadian consumers. Second, a granule that gets watered in still does nothing about the mulch bed producing the earwigs. Third, check the label for a PCP registration number and confirm the product is sold and shipped within Canada before you buy — a marketplace listing shipping a US granule north is an unregistered pesticide here.
What kills earwigs instantly, and is it worth buying?+
A contact spray or a boot kills the individual earwig in front of you instantly. Nothing kills an earwig population instantly, and that gap is where most money gets wasted. Any PMRA-registered crawling-insect aerosol will drop an earwig it directly wets within seconds — but earwigs are nocturnal and spend the day packed into damp mulch, soil chambers, and gaps you cannot reach, so the ones you kill on the patio at noon are a fraction of those living under the bed a few feet away. If you want a number that actually moves, buy traps and hardware, not a faster knockdown. Indoors there is a better move than buying an aerosol at all: vacuum them and empty the canister outside. It leaves no residue in a room where nothing is breeding, and it avoids the foul-smelling defensive fluid a crushed earwig releases onto grout and carpet.
Does soapy water or vinegar work, and should I buy anything for that?+
Soapy water works on direct contact and has exactly one worthwhile role: it is the bucket you drop your traps into. Soap breaks surface tension and disrupts the cuticle, so an earwig knocked from a newspaper tube into soapy water dies quickly and cannot climb out. What it is not is a treatment — sprayed on a plant or a foundation it kills only what it directly wets while still wet, leaves no residual, and evaporates within the hour. Vinegar and essential oils are not earwig killers at all, and the "smells earwigs hate" lists circulating online are mostly invention; vinegar sprayed on plants can also burn foliage. If you want a smell-based approach that genuinely works, run it in the other direction: earwigs are strongly attracted to fermenting and oily food odours, which is why a tin of oil with soy sauce in it is the most effective earwig device in this guide. Buy dish soap you already own; buy nothing else for this.
What can I use around vegetables, pets and children?+
Trapping is the only method with essentially no chemical exposure at all, which is why it is the right default around vegetable beds, herb planters, and dog runs. Oil tins should be covered versions — a lidded container with entry holes punched at soil level — if you have a curious dog or a toddler. Beyond trapping, PMRA-registered diatomaceous earth is the lowest-concern product, but the label still governs it: DE is a registered pesticide in Canada, it should be kept out of the airway during application, and only the uses printed on the label are legal ones. If you reach for a registered product near edibles, first check that edible plantings are actually a use site on that label — a product labelled for the outside of a building is not the same as one labelled for a vegetable bed, and the use site is as binding as the pest list. Then follow the setback and pre-harvest directions printed there, keep pets and children off treated surfaces until fully dry, and never assume a "reduced-risk" or "ECO" line means no precautions.
When should I apply what I bought?+
At dusk, and in the right month — the single change worth more than switching brands. Earwigs are strictly nocturnal, so a product applied in the morning has spent an entire day degrading in sun and heat before the target ever moves; the same product laid down at dusk meets them at full strength. On the calendar, southern Ontario activity runs from roughly late June to first hard frost and peaks from late July through September, because the European earwig produces a single generation a year that matures all at once in midsummer. Hardware you buy in May and June — door sweeps, downspout extensions, a rake for the mulch line — is prevention. Anything you apply in August is damage control on a population already at its annual maximum.
Is it worth paying a pest company for earwigs?+
For the overwhelming majority of Canadian households, no, and hiring anyone is money badly spent. A registered bag of DE, a bulb duster, a couple of door sweeps and a tube of exterior silicone is a modest hardware-store run, and the traps that do the heaviest lifting are made from tins you already have. A recurring spray program to solve a dozen earwigs in the bathtub in August is a subscription, not a solution. The genuine exceptions are worth naming: dozens entering daily for weeks despite proper exclusion (usually a moisture or drainage fault, where the right contractor may be a waterproofer rather than an exterminator), a food premises where any insect presence is a compliance issue, or a nursery or market garden taking real crop loss. Be suspicious of any earwig quote that does not begin with someone walking your mulch beds, window wells, downspouts, and eavestroughs.
Related Guides
- Start here for the method rather than the shopping: How to Get Rid of Earwigs in Canada — Traps, Moisture, and the Ear Myth
- Diatomaceous Earth in Canada — Which Brands Are PMRA-Registered
- Ortho Home Defense Canada — What You Can Actually Buy Here
- Silverfish Traps in Canada — Which Type, How Many, Where They Go
- Centipede Killer Canada — What to Buy, and in What Order
- How to Get Rid of Silverfish in Canada — The Humidity Fix
- Best Basement Dehumidifier in Canada — Sizing Guide
- Do Ultrasonic Pest Repellers Work? The Honest Answer
- Pest Control Cost Canada — What Professionals Charge
