ORIGINAL: JLmoore1956
take it from an old military guy, Diet Soda bottles are a hunter's best friend, or water bottles. Why pay for something like the spare bladder when you probably carry a bottle of water or drink a soda, and can recyle it!
[8D]
This is exactly what I do. I carry in a liter water bottle w/ me on every hunt (the camelpack leaks almost every time) and when I am done drinking, I fill it back up and pack it out. I don't honestly think human pee bothers them at all, however I think I am paranoid about leaving anything foreign smelling behind.