Jarhead
Now you gave me another option for filtration, great find.

Hygiene is very important! I was in the restaurant business for 30 years and had chemicals to fix this problem Obviously short term solutions are easy to plan for.
Long term is another story. I haven't seen anything (haven't looked either) for long term solutions for when the short term luxury items run out. How does one clean up after using the "hole" you dug? Just thinking about it makes me sick. Using the same hands to cook with as you just wiped with without proper cleanup, you are asking for trouble.
Plants to wipe with? Check first so you wont have an allergic reaction!
Sanitizing your hands afterwords! Without chemicals I'm clueless.

A stinky subject but a real problem if you don't know what you are doing.