Hand sanitizer is an important part of wilderness hygiene. Whether you’re backpacking, climbing, skiing, or mountaineering, keeping your hands clean helps reduce the spread of illness within your group. But while hand sanitizer is convenient, it has some significant limitations that every backcountry traveler should understand.
Hand sanitizer works best when your hands are relatively clean. Dirt, grease, sunscreen, and other materials can interfere with its effectiveness. If your hands are visibly dirty or greasy, washing with soap and water is the better choice. Sanitizer also becomes less effective when its alcohol concentration drops, so check expiration dates and store it properly.
Even in cold, snowy environments where water is difficult to access, handwashing remains important. Carry a small amount of biodegradable soap and use it with clean water, following Leave No Trace principles to prevent contamination of natural water sources. When washing isn’t practical, hand sanitizer can be a useful interim measure, but it shouldn’t replace handwashing whenever soap and water are available.
There is another important consideration: alcohol-based hand sanitizers don’t reliably eliminate every disease-causing organism. Norovirus, the highly contagious virus associated with outbreaks on cruise ships and in other group settings, is relatively resistant to alcohol-based sanitizers. Similarly, Giardia and Cryptosporidium are parasites that can cause gastrointestinal illness and are not reliably inactivated by typical hand sanitizers. Washing with soap and water is particularly important when these pathogens may be present.
For outdoor groups, hygiene is a shared responsibility. A single sick participant can affect an entire expedition, potentially compromising safety and forcing an early retreat. Encourage everyone to wash their hands after using the toilet, before preparing or eating food, and whenever contamination is suspected.
At the American Alpine Institute, we believe sound wilderness skills include more than technical climbing and mountain travel. Good hygiene, thoughtful preparation, and practical risk management help keep adventures running smoothly. Learn these essential habits alongside your mountain skills, and you’ll be better prepared for whatever the backcountry brings.