My recent post about disbursed camping rules for disposal of human waste brought me one comment about the hole (aka "cat hole") size that should be dug.
I dig mine at least 6 inches deep and the diameter depends on my trowel or shovel and the type of soil.
This question and answer brings up many more potential questions and answers.
I.e. Q: What do you do with toilet paper? A: it gets carried out and doesn't go in the hole.
I am not the best to answer all the questions or potential questions.
There is a very good website called Leave No Trace that can help with all the questions and answers.
I will not copy and post as they have copyright terms that need to be followed.
Here is LNT's site for human waste and cat holes (principle 3)
There are 7 principles
Please check out their website and get the whole story about leaving no trace.
Happy disbursed camping.