I am sure these have already been mentioned, I carry baby wipes for use in camp and paper blue shop towels for in the field (not the fastest to degrade though). The shop towels are because they are multipurpose, I used one as a dressing when my son hit his hand with a brush-hook and it worked great. I also use them to clean my hands after gutting big game. I started carrying a very small bottle of alcohol hand sanitizer in my field kit, it works well to clean your hands with if there is no water nearby. My hunting partner wears latex gloves to clean-up after making a deposit, that way his hands stay clean and he turns the gloves inside-out to carry them out for disposal.

Mike