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After you have cooked and eaten your meal, the best method for cleanup is?
Hot water - Take your dishes at least 200 feet away from any streams or ponds and use the hot water to wash them, taking care to keep the used gray water contained in one of your pots.
Biodegradable Soap - If you prefer to wash with soap, look for biodegradable versions. Avoid any soaps that contain phosphates
Strain, Drain, or Broadcast - Once the dishes are clean, you're left with the used gray water. Before you dispose of it, strain out any remaining food particles and add them to your trash. Then you can drain the remaining gray water or broadcast it by scattering it widely.