June 24, 2026 | Related: Tent Guide
| Product | Active Ingredient | Duration | Price | Best For |
|---|---|---|---|---|
| Sawyer Picaridin Lotion | 20% Picaridin | 14 hours | $12 | All-around, non-greasy |
| Ben's 30% DEET | 30% DEET | 8 hours | $8 | Heavy mosquito pressure, ticks |
| Sawyer Permethrin Spray | 0.5% Permethrin | 6 weeks (6 washes) | $15 | Treat clothing/gear, not skin |
| Thermacell MR450 | Allethrin (zone repellent) | 12 hours per cartridge | $35 + fuel | Base camp zone protection |
| Repel Lemon Eucalyptus | 30% OLE/PMD | 6 hours | $8 | DEET-free, CDC-approved |
Picaridin (20%) provides 14-hour protection against mosquitoes and ticks—longer than DEET at equivalent concentration—and does not melt plastic (DEET dissolves sunglasses frames, watch straps, camera grips, and tent fabric coatings). The lotion formula applies evenly and does not feel greasy after 60 seconds. CDC and WHO recommend picaridin as equally effective to DEET. For high-pressure mosquito environments (Alaska, Boundary Waters, Everglades), supplement picaridin skin repellent with permethrin-treated clothing and a head net ($5, Sea to Summit). No repellent stops 100% of mosquito landings—a head net eliminates the persistent one mosquito that circles your ear at 2 AM.
Permethrin is not a repellent. It is an insecticide—it kills ticks and mosquitoes that land on treated fabric. Spray shirts, pants, socks, and tent door mesh. One treatment lasts 6 weeks or 6 washes. Permethrin binds to fabric—it is safe for humans once dry (it is the same compound used to treat scabies in humans, at a different concentration). >Do not apply to skin. Do not spray near cats—permethrin is highly toxic to felines until dry. Spray clothing outside, let dry for 2 hours, then pack. For tick-heavy areas (Northeast, Midwest, Ozarks), permethrin-treated socks and pants are the most effective Lyme disease prevention—ticks die on contact before they find skin.
The Thermacell heats a mat saturated with allethrin (a synthetic pyrethroid), creating a 15×15-foot zone of protection. No application to skin or clothing. The MR450 model runs on a single butane cartridge for 12 hours. Effective in still air—wind disperses the repellent cloud and eliminates protection. Place the Thermacell upwind of the picnic table or tent entrance. In wind above 5 mph, switch to skin-applied repellent. Legal in most areas—check fire restrictions (it uses a tiny butane flame).
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