Best Bug Repellent for Hiking 2026: Picaridin vs DEET vs Permethrin
By Peak Gear Guide Editorial Team · Gear research & fact-checking
This article contains affiliate links. If you buy through them we may earn a small commission at no extra cost to you. We recommend by repellent type and active ingredient — we do not invent product ratings.
Quick Answer
For most hikers, the best setup is 20% picaridin on exposed skin plus permethrin-treated clothing. Picaridin matches DEET against mosquitoes and ticks but is odorless, non-greasy, and won’t damage gear; permethrin kills ticks on contact and lasts for weeks on fabric. Choose DEET (20–30%) instead if you prefer the most thoroughly studied option and do not mind the smell — and never apply permethrin to skin.
Key Takeaways
- Picaridin (20%) is the best all-round skin repellent — gear-safe, odorless, and effective for 8–12 hours.
- DEET (20–30%) is equally effective but greasy, and high concentrations can damage synthetic gear.
- Permethrin is for clothing only — it kills ticks on contact and survives several washes.
- For ticks, layer both: permethrin on clothing plus picaridin or DEET on skin (the CDC-recommended strategy).
- Apply sunscreen first and repellent second, then reapply after heavy sweat, rain, or swimming.
The right bug repellent for hiking is not about a brand — it is about choosing the correct active ingredient for the bugs you are actually facing. Three options dominate the trail: DEET, picaridin, and permethrin-treated clothing. They work in completely different ways, and the best setup usually combines two of them.
This guide is decision-first. Below you will find a head-to-head comparison table, a simple "what to use where" cheat sheet for mosquitoes versus ticks versus both, application tips that actually matter on the trail, and a tick-safety section covering Lyme disease risk. We recommend by ingredient and concentration rather than by specific product, so the advice holds up no matter what is on the shelf this season.
For background on how these chemicals work, the Wikipedia overviews of insect repellents, DEET, and permethrin are a solid starting point, and the CDC’s tick prevention guidance is the authority on tick protection.
DEET vs Picaridin vs Permethrin: At a Glance
The table below compares the three repellents across the dimensions that matter on a hike. Scroll right on mobile to see all columns.
| Factor | DEET | Picaridin | Permethrin (clothing) |
|---|---|---|---|
| How it works | Confuses insect scent receptors so they cannot find you | Confuses insect scent receptors; modern synthetic | Kills insects on contact when they touch treated fabric |
| Repels mosquitoes | Excellent | Excellent | Yes — kills on contact |
| Repels ticks | Good | Good | Excellent — kills ticks on contact |
| Applied to | Skin | Skin | Clothing & gear only — never skin |
| Typical duration | 6–8 hrs (20–30%) | 8–12 hrs (20%) | Weeks; survives several washes |
| Damages gear/plastics | Yes (high % can melt synthetics) | No — gear-safe | No (once dry) |
| Feel / smell | Greasy, strong odor | Odorless, non-greasy | Odorless once dry |
| Main downside | Can damage gear; oily feel | Slightly less long-studied than DEET | Not for skin; treat & dry ahead of time |
Durations are typical label ranges and vary with concentration, sweat, and conditions. Always follow the product label.
What to Use Where: Mosquitoes vs Ticks vs Both
The bugs you face determine the right setup. Here is the simple decision logic most experienced hikers follow.
Mostly mosquitoes (buggy lakes, summer evenings)
For mosquito-dominant hikes, a 20% picaridin skin spray is the easiest, most pleasant choice. It is odorless, will not melt your sunglasses or pack buckles, and lasts most of a day. DEET works just as well if you already own it. Cover all exposed skin and reapply when you sweat heavily.
Mostly ticks (grassy meadows, leaf litter, brushy trails)
Ticks crawl up from the ground, so your defense starts at your feet. Treat your shoes, socks, gaiters, and pant legs with permethrin, then add a skin repellent to exposed areas. Permethrin kills ticks that climb onto treated fabric, which a skin spray alone cannot reliably do. Pairing it with good hiking socks and tucked-in layers closes the gaps ticks exploit.
Both — the standard all-trail setup
The most protective and widely recommended approach is the two-layer system: permethrin on clothing and gear, plus picaridin or DEET on exposed skin. This is the combination the CDC points to for tick country, and it also handles mosquitoes with ease. If you only adopt one habit from this guide, make it this one. It pairs naturally with the bug-protection mindset in our 10 essentials for hiking guide.
Shop by Ingredient
We recommend by category and active ingredient rather than naming a single “best” product — formulations change and the right concentration matters more than the brand. These links open an Amazon search for each category.
Picaridin insect repellent (20%)
Search on AmazonThe best all-around skin repellent for most hikers — odorless, non-greasy, and gear-safe. Look for 20% picaridin for all-day protection against mosquitoes and ticks.
DEET insect repellent (20–30%)
Search on AmazonThe longest-studied benchmark repellent. Highly effective; choose 20–30% for hiking. Keep it off watch straps, sunglasses, and synthetic gear, which high-strength DEET can damage.
Permethrin clothing treatment
Search on AmazonSpray-on treatment for clothing, boots, gaiters, and gear — never skin. Kills ticks and mosquitoes on contact and lasts through several washes. Treat and fully dry before wearing.
Application Tips That Actually Matter
Repellent only works if you apply it correctly. A few small habits make a large difference on the trail.
Sunscreen first, repellent on top
Apply sunscreen, let it absorb, then add repellent over it. Reversing the order reduces the repellent’s effectiveness. Avoid combined sunscreen-plus-repellent products, since sunscreen needs frequent reapplication but you do not want to over-apply DEET or picaridin.
Treat clothing the day before
Permethrin needs to fully dry — usually two to four hours — before you wear treated clothing. Treat your hiking outfit, socks, and gaiters at home the evening before, hang them to dry, and they are ready for the trail. Pre-treated permethrin apparel is also available if you would rather skip the DIY step.
Reapply with sweat, water, and heat
Heavy sweating, rain, swimming, and wiping your face all strip skin repellent faster than the label time suggests. On hot days — the kind covered in our hot-weather hiking guide — carry a small bottle and reapply rather than trusting the maximum duration.
Cover the gaps
Bugs find the spots you miss: ankles, the back of the neck, behind the ears, and wrists. Tucking pants into socks and base layers into pants — the kind of system described in our hiking layering system guide — leaves fewer openings for ticks to climb in.
Tick Safety and Lyme Disease Risk
Mosquitoes are an annoyance; ticks are a genuine health risk. Blacklegged (deer) ticks can transmit Lyme disease and other illnesses, and the risk is highest in spring and summer in grassy, brushy, and wooded areas. Prevention is far easier than treatment, which is why the two-layer repellent strategy matters so much in tick country.
Reduce your tick risk
- Treat clothing and footwear with permethrin; use picaridin or DEET on exposed skin.
- Walk in the center of trails and avoid brushing through tall grass and leaf litter.
- Wear light-colored clothing so ticks are easier to spot, and tuck pants into socks.
- Do a full-body tick check after every hike — including the scalp, waistline, and behind the knees.
- Remove an attached tick promptly with fine-tipped tweezers, pulling straight out near the skin.
If you develop a fever, rash, or a spreading bullseye mark in the days or weeks after a tick bite, see a doctor and mention the bite. For authoritative, up-to-date guidance on tick removal and prevention, the CDC tick prevention pages are the best resource. Keeping feet dry and well-covered also helps — see our guide on how to keep your feet dry hiking.
Our Recommendation
For most hikers, the best setup is 20% picaridin on skin plus permethrin-treated clothing. Picaridin gives you all-day mosquito and tick protection without greasiness or gear damage, and permethrin adds a contact-kill layer that picaridin alone cannot match against ticks.
Choose DEET instead of picaridin if you want the most thoroughly studied option and do not mind the smell or the need to keep it off your gear. Use permethrin any time you are hiking in tick country — it is the single biggest upgrade to your tick defense.
Whatever you choose, match the concentration to your trip length, apply it correctly, and do a tick check afterward. The right ingredient used well beats the “best” brand applied carelessly.
Frequently Asked Questions
Is picaridin or DEET better for hiking?
Both are highly effective and recommended by the CDC. Picaridin is the better all-around choice for most hikers: at 20% concentration it provides protection comparable to higher-strength DEET against mosquitoes and ticks, but it is odorless, non-greasy, and — critically — it does not dissolve plastics or synthetic gear. DEET is the longer-studied benchmark and works exceptionally well, but high concentrations can damage watch straps, sunglasses frames, trekking pole grips, and synthetic clothing. If you hike in expensive technical gear, picaridin avoids that risk. If you want the most battle-tested option and do not mind the smell, DEET is still excellent.
Does bug spray repel ticks, or do I need something different?
Skin-applied DEET and picaridin do repel ticks, but they are less reliable against ticks than against mosquitoes because ticks crawl up from your shoes and legs rather than flying in. For serious tick protection, the strongest approach is permethrin-treated clothing combined with a skin repellent on exposed areas. Permethrin actually kills ticks on contact rather than just repelling them, and it bonds to fabric so it survives multiple washes. The CDC recommends this two-layer strategy — permethrin on clothing plus picaridin or DEET on skin — for anyone hiking in tick country.
Can I put permethrin directly on my skin?
No. Permethrin is for treating clothing, boots, gaiters, and gear only — never skin. On fabric it is extremely effective and long-lasting, but it should be applied to clothing that is then allowed to fully dry before wearing. Once dry it is odorless and safe against skin contact. For your exposed skin — face, neck, hands, ankles — use a separate skin repellent like picaridin or DEET. Think of it as two products doing two jobs: permethrin guards your gear, a skin spray guards what the gear does not cover.
How often do I need to reapply bug repellent on a long hike?
It depends on concentration, sweat, and conditions. As a rough guide: 20% picaridin lasts roughly 8 to 12 hours against mosquitoes and 8 hours against ticks; 20 to 30% DEET lasts about 6 to 8 hours. Heavy sweating, swimming, rain, and wiping your face all shorten that window, so reapply sooner on hot or wet days. Always follow the label, and reapply sunscreen first, then repellent on top — never the reverse. Permethrin-treated clothing does not need reapplication mid-hike; it lasts weeks and survives several wash cycles.
What concentration of DEET or picaridin should I buy for hiking?
Higher concentration mainly buys longer duration, not stronger protection. For hiking, 20% picaridin or 20 to 30% DEET hits the sweet spot — long-lasting protection without the greasy feel and gear damage of very high DEET formulas. There is little practical benefit to DEET above 30% for most day hikes; it just lasts marginally longer. Avoid the lowest concentrations (under 10%), which fade quickly and force frequent reapplication. For multi-day trips, pair a 20% picaridin skin spray with permethrin-treated clothing rather than reaching for ultra-high DEET.
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Peak Gear Guide Editorial Team
Gear research & fact-checking
Jake has spent 15 years testing hiking and backpacking gear across the Appalachian Trail, Pacific Crest Trail, and mountain ranges throughout North America and Europe — including plenty of mosquito-thick basins and tick-heavy meadows. He focuses on practical, real-world advice and ingredient-level guidance rather than hype. His recommendations are independent and unsponsored.