Skip to main content

How Permethrin-Treated Clothing Repels Ticks, Mosquitoes, and Other Bugs

Summer bugs
Image used with permission by copyright holder

Nothing ruins the endorphin buzz of a backcountry adventure like discovering a tick burrowing into your hair or skin at the end of the day. (Or worse, finding one in your bed the next morning.) It’s more than an annoyance — tick-borne illness is on the rise, causing issues like rash and fever, as well as chronic illnesses like Lyme disease and other viruses.

Recommended Videos

Unless you’ve stumbled upon a tick repellent that actually works, prevention usually means a choice between jumping in a nearby lake in hopes of drowning any toxic hitchhikers or asking a friend to pick through your hair and beard like a mother gorilla caring for her young. However, a new fabric technology prevents ticks from latching on.

Legendary outdoor outfitter L.L. Bean, in cooperation with Burlington, launched a line of insect-repellent outdoor wear — shirts, pants, socks, and hoodies — treated with permethrin, a substance that is basically a nerve agent for bugs. Other manufacturers like Ex Officio and Duluth Trading Company have followed suit, but, according to a Consumer Reports test that focused on mosquitoes, L.L. Bean garments were most effective.

ll bean shirt
Image used with permission by copyright holder

Permethrin, a medicated lotion made from a synthesized extract of the chrysanthemum flower, has been around since the 1970s. Listed on the World Health Organization’s List of Essential Medicines, it deters insects by disrupting their neurons. Don’t worry, though — the EPA has rated this substance perfectly safe at the level allowed for clothing (0.52 percent, if you’re curious). Moreover, field testing from manufacturers and consumers alike has shown that the permethrin doesn’t leach from fabric onto the skin. As to its effectiveness, reviewers say they rely on these garments for everything from hunting and fishing to yard work. Some have even said that the aura of permethrin-treated clothing wards off bugs from uncovered areas of the body, such as hands and face.

If you’re thinking this is more or less the same as your uncle’s technique of soaking his fishing shirt in DEET, think again. Permethrin-treated clothing undergoes a sophisticated process where the substance is actually bound to the fabric during manufacture. This also means that the bug repellent won’t dissipate after a few washes — you can launder permethrin-treated clothes just the same as everything else you own. Tumble-dry them, iron them, even bleach them, and they’ll still perform. And if you’ve ever been downwind of a heavy sweater covered in commercial bug repellent, you’ll be happy to learn that permethrin-treated clothes don’t stink.

It should be noted that permethrin won’t necessarily prevent bugs from landing on you, but it is proven to knock them dead within a matter of minutes. So you’re doing good for the world, as well as protecting yourself.

If they do land on your or your stuff, may we suggest these fun (and often ridiculous) bug-killing weapons?

Chelsea Batten
Former Former Digital Trends Contributor, The Manual
Chelsea Batten is a writer, photographer, and Kerouac groupie. One of the original digital nomads, she was seduced from life…
Topics
A long-awaited reopening in the Smoky Mountains is finally here
Great Smoky Mountains National Park repairs a culvert and more at this favorite hiking spot
Great Smoky Mountains National Park

Ever since the devastation of Hurricane Helene, Great Smoky Mountains National Park has slowly but surely been reopening sections of the park following reconstruction efforts. The Cosby Area, which is a popular place for visitors to hike, camp, and picnic, is next on the list. As of May 12, 2025, the Cosby Area has officially reopened following the completion of a culvert replacement under Cosby Entrance Road.

This is one of many rehabilitation projects in the area aimed at protecting aquatic species and managing water flow, since flood damage has been a major concern. Heavy rainfall, flooding, and recent debris buildup have heightened risks in the area.

Read more
Top attraction at Sequoia National Park finally reopens after 4 years
Sequoia National Forest opens the Crystal Caverns after 4 years of closure
Crystal Cave at Sequoia National Park

Crystal Cave, which is Sequoia National Park's most popular attraction since the park's opening in 1940, will finally reopen for guided tours on May 23 after four long years of closure. These closures were due to several consecutive natural disasters, including the 2021 KNP Complex wildfire, as well as 2022 and 2023 winter storms which brought heavy snow, flooding, and landslides.
“The opening of Crystal Cave is a big step forward in disaster recovery for Sequoia and Kings Canyon,” said Clay Jordan, Sequoia and Kings Canyon National Parks superintendent. “We’re excited to be able to reopen this incredible attraction to visitors and encourage people to enjoy all of the beauty and wonder these parks have to offer.”

Restoration efforts have been extensive near the Giant Forest, where Crystal Cave resides. The Sequoia Parks Conservancy replaced several power lines, stabilized roads, and removed almost 3,000 hazardous trees, with 2,000 more to go.

Read more
Do golf balls go bad? Here’s how to know when it’s time to toss them
Sketchy golf ball? Here's how to see if it's still playable
Golf ball near the hole

Maybe you've found a box of old golf balls in your garage, or an unclaimed one out on the fairway. You might be wondering, do golf balls go bad? Modern golf balls are actually pretty robust, lasting as long as five or ten years or more without significant degradation, but it's always good to check. Golf balls can degrade over time, and the signs aren't always obvious. Here's everything you need to consider when teeing up with old golf balls.
How to tell if your golf balls are bad

Look for structural damage
The first thing to look for is structural damage. If your golf balls have visible scuffs, cuts, or cracks from play, they aren't going to serve you well out on the fairway. These deformities, even if they are small, can affect the aerodynamics during flight. You might be okay with very minor dings, but use your best judgment.
Checking the health of the core
If your golf ball has no structural damage, now it's time to check the health of the core. I like to give them a gentle squeeze to see if they are firm and consistent all the way around. A bad one will feel softer or even squishy in places. Then, gently bounce the golf ball on a hard surface and compare it to a new one. If it bounces almost as high, that means that it's likely still good.
The saltwater test
Epsom salt isn't just great for getting rid of sore muscles. A while ago, Bryson DeChambeau made some waves for his creative method for testing the balance of his golf balls. Golfers have been doing this for a while, but he went on to win the U.S. Open with this golfing hack.

Read more