The Best Mosquito Repellents for Outdoors

Picaridin at 20% is the concentration public health agencies point to, and Sawyer hits it. The CDC lists picaridin among its four recommended active ingredients, and 20% is the level rated for up to 12 hours against mosquitoes and ticks. It also covers flies, gnats, and chiggers for up to 8 hours. You're not trading effectiveness for a gentler formula here. That's the whole reason picaridin has taken over as the default recommendation from dermatologists and outdoor gear reviewers.

It won't destroy the things you're wearing. DEET eats soft plastics. Spray it near your sunglasses and the coating clouds; get it on a synthetic watch band and it goes tacky. Picaridin doesn't do any of that. Sawyer explicitly says you can spray it on clothing, pack buckles, fishing line, and firearm finishes. If you've ever ruined a pair of glasses in the field, you'll appreciate this more than any hour count.

It's odorless and dries in about a minute. This sounds minor until you have to reapply on a kid, or share a tent with someone who just doused themselves. There's no fragrance and no oily film — the skin feel is closer to nothing than to bug spray. Owners consistently mention that this is what finally got their families to actually use repellent instead of arguing about it.

The two-pack fits the way people actually carry repellent. Two 3-ounce bottles means one lives in the car and one lives in the daypack. Small bottles clear airline liquid rules, too. For day hikes, soccer sidelines, and backyard evenings, that's a more useful configuration than a single big can you'll leave at home.

Flaws but not dealbreakers

The pump gives you less control than an aerosol. Getting even coverage around your ears, neck, and hairline takes more fiddling with a pump than with a pressurized can. Most people end up spraying into a palm and wiping it on for the face and neck, which works fine but is a step you don't want in a swarm.

Three ounces goes fast on a long trip. A week of backcountry camping with full-body application will drain both bottles. Plan on more than you think, and don't count on the 12-hour figure if you're sweating hard or swimming — reapply after either, regardless of what the label promises.

Sawyer doesn't state a warranty term for this spray.

DEET has the deepest track record of any repellent ingredient, and 25% is the sweet spot. A widely cited New England Journal of Medicine study found roughly 24% DEET gave complete protection for about five hours per application. Going higher mainly extends duration, not strength. At 25%, you get around 8 hours against mosquitoes and ticks — plenty for a full day of hiking, hunting, or yard work.

The dry finish is a real improvement, not marketing. Older DEET sprays left skin feeling coated and shiny. This one goes on powder-dry and doesn't stain clothes. If DEET's texture is the reason you stopped using it, this formula is worth another try. It's the difference between something you'll actually reapply and something you'll leave in the garage.

Aerosol coverage is fast and even. You can do both legs in a few seconds without missing patches, which matters when you're getting swarmed at the trailhead. The three-can pack means one in the truck, one in the garage, one in the camp bin — and per ounce, it's among the more economical ways to buy repellent here.

Tick protection makes it a strong choice for wooded country. If you hike in the Northeast or Upper Midwest, ticks are the bigger long-term worry. This holds up against them for the same 8-hour window, so a single morning application covers a full day on the trail.

Flaws but not dealbreakers

DEET will damage your gear, and this concentration is no exception. Repeated contact degrades soft plastics, synthetic watch bands, and optical coatings. Spray it away from your sunglasses, your phone case, and your rain shell, and wash your hands before handling anything with a lens.

It still smells like DEET. The dry finish fixes the feel, not the scent. There's a distinct chemical odor that some people find genuinely unpleasant in a tent or a car. If that's you, the picaridin sprays here are the better answer.

It's the wrong product for the youngest kids. Pediatric guidance advises against DEET for infants under two months, and calls for care with older children — never on hands or near the mouth. For families with babies, pick a picaridin spray or an area device instead.

Nobody has to put anything on their skin. This is the whole point. You set it on the table, press one button, and 15 minutes later your patio is covered out to about 20 feet. For a dinner party, that means no passing a bottle around and no explaining application instructions to guests. For families with toddlers, it means protection without a wrestling match.

Scent-free and flameless beats a citronella candle on every count. No smoke drifting into your food, no open flame near kids, and a coverage area many times what a candle manages. The device runs off heat-activated repellent cartridges, so there's nothing burning and nothing to smell.

USB-C charging removes the fuel hassle. Older Thermacell units ran on butane canisters you had to buy, store, and swap. This one charges from the same cable as your phone. A 12-hour repellent refill comes in the box, so it works the night you unpack it.

It shines exactly where sprays are least convenient. Poolside, on a deck, at a picnic table, at base camp — anywhere people sit still, get wet, or eat with their hands. Sprays and swimming don't mix; this doesn't care.

Flaws but not dealbreakers

Wind is the deal-breaker. A steady breeze past roughly 10 mph scatters the repellent vapor before it can build up, and the protection zone collapses. On an exposed deck or an open shoreline, you may get very little. Sheltered spots are where this works.

Step outside the circle and you're unprotected. Walk to the grill, the garden, or the far end of the yard and you're on your own. Pair it with a topical spray if anyone's going to be moving around.

The battery may not cover a full evening, and cartridges are a running cost. About 5.5 hours per charge means a party starting in the late afternoon can outlast it. Refill cartridges are consumable, so the real cost of a season is higher than the box price suggests.

The E55 comes with a two-year warranty that extends to three years with registration.

When reapplying isn't practical, duration is what you're buying. At 98.11% DEET, the label claims up to 10 hours. Higher concentrations don't repel harder — they just last longer before the protection fades. On a long portage, a dawn-to-dusk work shift, or a day of travel in an unfamiliar place, that single application is the point.

It's built for the conditions where lighter formulas give up. Think black-fly season in the north woods, coastal marsh after a flood, or a jungle trek. The label also covers ticks, gnats, biting flies, chiggers, and fleas, which is the full cast of characters in those environments.

Disease risk is the real argument for it. Health agencies recommend EPA-registered repellents for anyone traveling to areas with active mosquito-borne transmission, and this formula names Zika, West Nile, dengue, and chikungunya. If you're heading somewhere with an outbreak, the extra margin is worth the trade-offs.

The pump bottle is small and travel-friendly. Four ounces in a compact bottle slips into a pack lid or a carry-on toiletry kit. For a formula this concentrated, a little goes a long way, so one bottle covers a lot of trip.

Flaws but not dealbreakers

It will ruin plastics, and fast. At this concentration, contact with sunglasses, watch faces, synthetic fabric, phone screens, or a rifle finish causes damage that's quick and permanent. Apply it away from your gear and wash your hands before you touch anything you care about.

It feels and smells like heavy-duty DEET. There's an oily skin feel and a strong chemical odor. Wash it off with soap and water as soon as you're back indoors — this isn't something to sleep in.

It's the wrong product for casual use and for young children. Suburban yards and easy day hikes don't need 98% DEET. Pediatric guidance rules it out for children under two, and most families are better served by picaridin at any age.

It's the same active ingredient at the same concentration as our top pick. Twenty percent picaridin, rated for 12-plus hours, safe on jackets, fishing line, and plastics. If you've already decided picaridin is the right ingredient — and for most people it is — this is a second route to it with a different bottle.

The continuous spray covers big areas faster than a pump. One pass down each leg, one across the back, and you're done. If you've ever tried to spray your own shoulder blades with a pump bottle, the difference is obvious. This is the better format when you're covering a lot of skin or several people in a hurry.

It's a strong pick for sensitive skin. Picaridin is the ingredient dermatologists most often suggest when DEET causes irritation. It's odorless, non-greasy, and doesn't carry the photosensitivity concerns some formulas do. For anyone who's reacted badly to bug spray before, this is the sensible place to start.

One bigger bottle beats several small ones for home use. Six ounces in a single can is the one you keep by the back door all season. It's a better shape for a garage shelf than a handful of travel bottles, and there's no aerosol propellant involved.

Flaws but not dealbreakers

The nozzle can clog if it sits unused. Leave it on a shelf through the off-season and the eco-spray head may sputter or block on first use. Give it a test spray before you pack it for a trip rather than discovering the problem at the campsite.

The bottle is too big for a carry-on. Six ounces exceeds airline liquid limits, so this stays home or goes in checked luggage. For travel, the small two-pack picaridin bottles are the practical choice.