Reference (referred to you back in May):
FM 21-10 Field Hygiene and Sanitation June 2000
Yes, we really are going to cover How To Sh*t In The Woods.
Get it right, and life is happy.
Get it wrong, and you may get a visit from Mssrs. Dysentery and Hepatitis.
They are not your friends., and if you give them to your team mates, they won't be your friends either.
a) Downhill from your position
b) Downstream from your water supply point
c) 200' away from that or ideally any water source, or your campsite, minimum
For the uninitiated, the stick replaces toilet paper when you don't have that, or the three seashells if you're from San Angeles in the dystopian future.
If you don't have an e-tool (WTF?), or you were going lightweight, these things are the bomb, for about $10 @ WallyMart, etc.:
The Slit Trench
For larger units and/or a longer stay in a lay-up or patrol base.
Bury as you go. The cans over the toilet paper are to keep it dry in rainy environments or on misty nights and dewy mornings.
And if you're using MREs, everyone whose BTDT knows you always save the TP bundles, and put them in a ziplok. They may be all you get for some time, and beggars can't be choosers. Otherwise, find a really good stick, without bark or splinters.
Pack it in, pack it out. You'll want plastic, with no holes in the bags.
This is the option selected by elite reconnaissance units, going back years.
If you don't leave it in the field, there's nothing for anyone to find later on.
You can also elect to deposit all the bags at one central location later on, away from your area of interest, buried and concealed well, and far off your line of march.
And you do what you like, but if it's going in my pack, I'm double knotting it, and double-bagging it.
And wash your hands afterwards!
The way to break the fecal-oral disease vector is to clean up after yourself, scrupulously.
And although it's grey water and not black, you should do the same with anything including water or residue left over after washing eating or cooking utensils, brushing teeth, shaving, etc. Dig a sump hole, far from water supplies, and bury it. Getting discovered because someone saw your sudsy crud floating by downstream will be painful, was stupid, and is easily prevented.
And BTW, baby wipes and disinfecting hand sanitizer are your friend.