1. Pour water in a large sealable plastic bag
It is important that you find an area at least 200 feet from any water source. You don’t want soap contaminating a water source. Place dirty clothes in a large sealable plastic bag. A one gallon plastic bag works well. Add enough water to fully cover the dirty clothes.
2. Add biodegradable soap
Add a few drops of biodegradable soap and seal the plastic bag. Do not add too much soap. It is always better to add less soap at the beginning.
You should never use normal laundry soap in the wilderness. Biodegradable soap is much safer because it can break down faster in the wilderness. Never use biodegradable soap in streams or any natural water source. Always wash clothes at least 200 feet from any waterway.
3. Agitate the dirty clothes
Agitate the dirty clothes inside the plastic bad. Add additional soap if needed. Using too much soap will require more water to rinse out.
4. Safely dispose of the used dirty biodegradable soap mixture
Dispose of the used biodegradable soap and waste wash water at least 200 feet from any water source. Never wash clothes in a stream.
5. Wring out your clothes
Wring out your clothes to remove the soapy water.
6. Rinse clean clothes with water
Place your clothes back in the sealable plastic bag and add water. Agitate your clothes to remove any remaining soap. Dispose of the remaining water at least 200 feet away from any water source.
7. Wring out clothes
After all the soap is rinsed out of your clothes, wring out any remaining water.
8. Securely hang your clothes to dry
Then, you can attach your clothes securely to your pack to dry while you hike. Most backpacks have loops that make this process easy (typically at the bottom of your pack).