Wear permethrin-treated clothes, but don't skip the DEET

Permethrin-treated clothing is effective, but it’s not a replacement for topical repellent — use both for best protection.

Here’s the deal: Permethrin is an insecticide that gets bonded to fabric. Mosquitoes that land on it get irritated or die. It works well for areas the clothing covers (arms, legs, torso). But it does nothing for exposed skin — face, hands, ankles. That’s where topical repellent (DEET, picaridin, oil of lemon eucalyptus) comes in.

Studies show that combining permethrin clothing with DEET gives near-complete protection, way better than either alone. Permethrin clothing also lasts through many washes (some brands claim 70+), so it’s a set-it-and-forget-it layer. Topical repellent you have to reapply.

The catch: Permethrin doesn’t repel mosquitoes from a distance. It only kills or disorients them on contact. So if you’re standing still and they’re swarming your face, they’ll still bite any exposed skin. That’s why you need the topical stuff as your active shield.

Bottom line: If you’re going into heavy mosquito territory (tropics, backcountry, Zika zones), get treated clothing and carry a good topical repellent. If it’s just your backyard for an hour, topical alone is fine. The combo is overkill for light exposure but unbeatable for real protection.