Spring. Flowers are blooming, snow turns to the elusive corn skiers covet, and mountain biking is back. It鈥檚 also the stinkiest time of year, thanks to the mix of mildew-producing rain and how much you sweat while getting after it in the warmer, humid weather. After working as a raft guide for more than a decade and dirtbagging out of my truck for a few years, I consider myself an expert at keeping gear stink-free. (OK, maybe just smelling not quite as bad.) Sweat鈥檚 a powerful foe, but here are some tips to help you fight the funk.
Get on It Early
Stink begets stink. The best way to mitigate gear odor is not to let it get too stinky in the first place. Drying out socks and undies during random downtime or dabbing your shirt with some ($18) will make a huge difference in the level of funk you鈥檙e contending with at the end of a trip.
Buy Synthetics with Odor-Fighting Treatment

Synthetics like polyester are notorious for holding onto funk with a death grip. (My friends and I used to call all synthetics 鈥減olypoopalene.鈥) Today, thankfully, pretty much every piece of premium synthetic apparel has some type of odor-fighting treatment. My personal favorite is , which uses a silver-salt liquid to fight odors. It works so well that I wore a Polygiene-infused shirt for eight days straight without washing while training for an ultra.
Cook It in the Sun
UV light is remarkably effective at killing bacteria. Most stinky gear situations can be made better with a day hanging on a line in full sun. For instance, I had a pair of ($110) that didn鈥檛 leave the roof box of my car for the entire 2015 spring kayaking season. My wife wouldn鈥檛 let them in the house. But three 100-plus degree days of baking in the sun made them indoor-worthy again. Dry your sweaty base layers outside when the weather is nice instead of using the machine鈥攊t鈥檚 easier on your gear.
Make Friends with Wool

Wool mitigates odor by absorbing stank-causing microbes and not allowing them to grow. But don鈥檛 think of it as a silver bullet. Every textile, no matter how magical, has a breaking point. A pair of merino wool socks, like the ($18), will be good for a solid week before they start to reek.
Wash It Right Away
Make running an immediate load of laundry part of your unpacking routine. It takes discipline, especially when you get home late, but even one extra night stuck at the bottom of your pack might be the difference between a new lease on life and retiring your favorite shirt.
Use De-Stink-Specific Detergents

I left a wet Outdoor Research synthetic shirt in the roof box on my car for more than two months last summer. (I tend to do that with a lot of gear.) When I cracked open the box, the smell emanating from it was horrifying. But I was able to bring the shirt back to life by drying it in the sun, washing it with ($10), and then leaving it out for another cycle under the sun. I鈥檝e been using Basewash for more than a year now, and it鈥檚 head and shoulders above normal detergents when it comes to removing odors from synthetic clothing鈥攏ot to mention it leaves apparel with a pleasant, better-than-BO smell.