If you have got to go, then you have got to go...I remember my dad tellin me to watch out for poisen ivy, stay off the main trails, and be sure to dig a small hole and cover it up,it has never had an impact on wildlife activity that I could tell.
I always keep a handful of dirt out of my pitfor cover scent and sometimes take a cedar branch and pull it back and forth
between my britches legs afterwords.