Field hygiene: staying clean when there’s no shower

Here is the unglamorous truth about backcountry illness: a lot of the gut trouble blamed on “bad water” is actually bad hand hygiene. Studies of long-trail hikers keep finding that the people who sanitize their hands get sick less, water filter or no water filter. Hygiene in the field is not about comfort (though it helps) and not about smelling nice (a lost cause by day three). It is disease prevention and injury prevention, and in a longer emergency it matters more every day the normal systems stay down.

Hands are the whole ballgame

Fecal-oral transmission is the main route for backcountry GI illness, and it travels by hands: yours, and those of whoever shared your trail mix. Two rules cover most of it:

• Clean your hands after every bathroom stop. Every one.
• Clean them again before handling any food. No exceptions for “just grabbing a bar.”

Alcohol-based hand sanitizer (60 percent alcohol or more) is the field standard: a 2-ounce bottle weighs nothing and lives in your hip belt pocket where you will actually use it. Soap and water works better on visibly dirty hands, so carry a half-ounce bottle of concentrated camp soap like Dr. Bronner’s too. And do not share bags of snacks hand-to-bag in a group; pour into palms instead. That one habit has stopped entire group outbreaks.

Bathroom protocol

Dig a cathole 6 to 8 inches deep and at least 200 feet (about 70 adult paces) from water, camp, and trails. A lightweight trowel like the Deuce of Spades (0.6 ounces, about $20) makes this a one-minute job instead of a heel-scraping ordeal. Cover and disguise when done. Pack out toilet paper in a zip bag, or use natural materials if you know your smooth rocks from your poison ivy. Some high-use and desert areas legally require packing everything out in a WAG bag, and rules vary by land agency, so check before you go.

Then sanitize. See section one.

Feet: the injury side of hygiene

Feet are where hygiene stops being about germs and starts being about mobility. Wet, dirty feet blister, and in cold conditions constantly wet feet can progress to genuine tissue damage. The routine: dry socks are treated as gear, with a dedicated dry pair for sleeping that never hikes; feet get washed or at least wiped and fully air-dried every evening; hot spots get taped the moment you feel them, not at the next break. A person who cannot walk is a person who needs rescue, and the distance between those two states is often one neglected blister.

The daily field bath

You do not need much water to reset your body. The priority zones are armpits, groin, and feet (the classic triage every soldier learns, usually with saltier vocabulary). Method: a bandana or a few baby wipes, a drop of camp soap, one liter of water or less. Do it 200 feet from any water source, because even biodegradable soap does not belong in creeks and lakes; biodegradable describes what happens in soil, not water. Unscented wipes beat scented ones anywhere bears also live. Pack used wipes out; they do not decompose on any timeline you want to think about.

Chafe prevention earns a mention: clean and dry beats any product, but a small stick of Body Glide or a film of petroleum jelly on known trouble spots saves miserable miles.

Camp kitchen discipline

Wash pots away from water sources, strain out food particles and pack them with your trash, and broadcast gray water over a wide area 200 feet from water and camp. Dry dishes completely; a damp pot in a warm pack is a petri dish with a handle. In bear country, all of it (food, trash, scented items, the wipes) hangs or goes in a canister away from your tent.

Your next step

Build a dedicated hygiene kit this week and stage it in your pack and your bug out bag: 2 ounces of hand sanitizer, half an ounce of camp soap, a trowel, toilet paper in a zip bag with a second bag for packing out, unscented wipes, a bandana, and tape for blisters. Total weight under 12 ounces. It is the least exciting pouch you will ever pack and one of the most likely to keep you healthy.