BuzzSkito Mosquito & Tick Control Specialists · Published May 1, 2026 · Updated July 12, 2026
The permethrin brand you will find in Canadian stores is Sawyer — for clothing, gear, and tents (never skin):
What Permethrin Does (and Why It’s Different from DEET)
Permethrin is a synthetic version of pyrethrin, the natural insecticide found in chrysanthemum flowers. Unlike DEET and picaridin (which are repellents applied to skin), permethrin is a contact insecticide applied to clothing. When a tick or mosquito lands on permethrin-treated fabric, the chemical disrupts its nervous system within seconds — the insect either falls off or dies before biting through the fabric.
This is why permethrin is the gold standard for hikers, military personnel, and outdoor workers — DEET only works while it’s wet on your skin (a few hours), while permethrin-treated clothing remains active for 6 weeks of wear or 6 wash cycles.
Is Permethrin Legal in Canada?
Yes — permethrin is legal in Canada, but the legal format depends on how you use it. Low-concentration permethrin clothing spray (Sawyer 0.5%) and factory permethrin-treated clothing are fully legal to buy and use as consumer products. What is not legal for a homeowner is spraying concentrated permethrin on your own lawn — higher-concentration yard/turf concentrates are classified by Health Canada as commercial- or restricted-class products that only a licensed applicator may apply.
| Permethrin format | Legal for consumers in Canada? | Where |
|---|---|---|
| Sawyer 0.5% clothing/gear spray | Yes — buy & use freely | Cabela’s, MEC, Canadian Tire, Amazon.ca |
| Insect Shield treated clothing | Yes — buy & wear | Outdoor apparel brands, Amazon.ca |
| 10%–36.8% yard/turf concentrate | No — licensed applicator only | Not sold to Canadian consumers |
So if you are searching “is permethrin legal in Canada,” the honest answer is: yes for your clothes, no for your lawn. For whole-yard protection you legally need a licensed operator — see our tick control and mosquito control services below.
Why Yard-Application Permethrin Is Restricted in Canada
Health Canada’s Pest Management Regulatory Agency (PMRA) classifies pesticides into Domestic, Commercial, and Restricted use categories. Higher-concentration permethrin products intended for yard application — the kind you can buy at a US Home Depot — fall under Commercial or Restricted classification in Canada, requiring a licensed applicator.
The same one-glance test applies to every household insecticide you buy online, not just permethrin: look for a Canadian PCP registration number on the label photo, and then check that your pest and your intended use site both appear on that label. Cross-border marketplace listings surface US-registered stock to Canadian buyers constantly, and it is the single most common way a Canadian ends up with a product they cannot legally use. We apply that check product by product in our Canadian buying guides for cockroach spray, earwig traps and killers, and centipede products — the last two include the American perimeter sprays that have no Canadian counterpart at all.
This is partly because PMRA is more conservative about residential exposure than the US EPA, and partly because Ontario has additional Cosmetic Pesticides legislation limiting which products can be applied to residential lawns at all. The result: most yard-application permethrin you see online or in US retailers cannot be legally imported and applied to a Canadian residential property.
Source: Health Canada — Pest Management Regulatory Agency (PMRA), Pesticides and Pest Management.
Permethrin Concentrate: Dilution & Coverage (Reference)
If you have researched permethrin concentrate — the 10% to 36.8% liquids sold to US homeowners under names like Permethrin SFR, Martin’s 10%, or GordonV — this is what the dilution and coverage math looks like. Important: these concentrates are not sold to Canadian consumers and cannot be legally applied to a residential lawn in Canada. The table is a reference only so you understand what a licensed applicator is metering when they treat your yard.
| Concentrate | Typical dilution | Finished % | Coverage per gallon mixed |
|---|---|---|---|
| Permethrin SFR 36.8% | 1.5 oz per gal water | ~0.5% | ~1,000 sq ft (turf/foliage) |
| Permethrin 13.3% (10% AI) | 4 oz per gal water | ~0.5% | ~1,000 sq ft |
| Martin’s 10% | 5 oz per gal water | ~0.5% | ~1,000 sq ft |
| Sawyer 0.5% (clothing, ready-to-use) | No dilution — RTU | 0.5% | 1 bottle ≈ 2 full outfits |
Coverage is approximate and varies with foliage density and sprayer calibration. In Canada, only the ready-to-use Sawyer 0.5% row is a legal consumer purchase — the concentrate rows require a licensed applicator. For a legal whole-yard treatment, get a free yard assessment.
What You CAN Buy as a Canadian Consumer
1. Sawyer Permethrin Clothing Spray (0.5%)
The standard product. Apply to outdoor clothing — pants, shirts, socks, hat, hiking boots, gear bags. Let dry 24 hours before wearing. Re-apply after 6 wash cycles. Effective against ticks, mosquitoes, blackflies, and chiggers.
2. Insect Shield Factory-Treated Clothing
Pre-treated clothing from outdoor brands (ExOfficio, Orvis, Columbia, etc.) using a proprietary permethrin-bonding process. Lasts 70 wash cycles vs 6 for spray-on. Higher upfront cost ($40–$120 per garment) but far lower long-term cost for frequent hikers.
3. Permethrin-Treated Pet Products (Dogs Only)
Some flea/tick collars and topical treatments for dogs use permethrin-based formulations. Veterinarian prescription typically required. NEVER use on cats — even passive exposure to permethrin is fatal to cats.
4. Permethrin Indoor Residuals (Bed Bugs)
Permethrin’s other legal Canadian consumer route is indoors: PMRA domestic-class bed bug residuals such as Doktor Doom Pro Max use permethrin on baseboards, bed frames, and furniture perimeters, where a surface residual is exactly the right tool. Same active, entirely different label and directions from anything you would put on clothing — see our guide to the best bed bug sprays and killers in Canada for which products carry a Canadian PCP number and which US names are not legal here.
The Licensed-Applicator Alternative for Whole-Yard Treatment
If you want yard-wide tick and mosquito protection (not just clothing), the only legal residential option in Ontario is hiring a licensed pesticide operator. Licensed Ontario applicators use Health Canada-approved formulations (typically bifenthrin or deltamethrin-based) that provide 21–30 days of residual yard protection per treatment.
BuzzSkito is licensed under Ontario Pesticide Operator Licence #L-240-2436835197 and provides residential mosquito and tick barrier spray across the GTA. Single treatments start at $99; seasonal programs cover the full May–September season with bi-weekly or weekly applications. Get a free quote for your property →
Permethrin vs Other Repellents — Side-by-Side
| Compound | Application | Duration | Best For |
|---|---|---|---|
| Permethrin | Clothing (NOT skin) | 6 weeks / 6 washes | Hiking, ticks, hardcore outdoors |
| DEET 30% | Skin | 5–8 hours | Active outdoor use |
| Picaridin 20% | Skin | 5–7 hours | DEET alternative, kid-friendly |
| Thermacell | 4.5m radius | 4 hr per mat | Stationary patio use |
| Bifenthrin (Pro) | Whole yard | 21–30 days | Licensed barrier spray |
Stacking Permethrin with Other Strategies
Smart Ontario hikers and homeowners use permethrin as ONE layer of a multi-tool strategy:
- Permethrin clothing spray for hiking, yard work in tick zones, evening walks
- DEET or picaridin on exposed skin for active outdoor use
- Thermacell on the patio for stationary repellent zone
- BTI dunks/bits in any standing water on your property
- Professional barrier spray for whole-yard residual protection
Each of those five layers is its own buying decision, and the products we have vetted for Canadian availability and PMRA registration — skin repellents, treated clothing, larvicides, area devices — are sorted by pest in our guide to Canadian pest control products.
There is a sixth layer that uses no chemistry at all: a physical barrier. Permethrin protects the clothing you are wearing, but it does nothing for the two hours you sit still at a picnic table — and mesh does that job perfectly, with nothing to reapply and no PMRA registration to think about. If you eat outdoors at a campsite, a dock, or a cottage deck, a screen tent or screen house is the cheapest reliable bite-free zone you can buy, and it works on black flies too, which repellents handle noticeably worse.
Notice what is not on that list: a UV bug trap. They are the most-advertised backyard device in Canada and the least useful layer here — independent trap studies put mosquitoes under 5% of a UV trap’s catch, and ticks are not attracted to light at all. If one is on your shortlist anyway, read whether DynaTraps actually work on mosquitoes before you spend the money.
Related Reading
- Mosquito Dunks Canada — Where to Buy + How They Work
- Thermacell Canada — Where to Buy + Do They Work
- Mosquito Bits Canada vs Dunks
- Mosquito Repellent Guide — Ontario 2026
- Best Screen Tents & Screen Houses in Canada
- Do DynaTraps Actually Work on Mosquitoes?
- Best Wasp Traps in Canada — Bag, Sticky & Reusable Compared
- BuzzSkito Tick Control Service
