OK, so, Blue Bags. Since mountains are generally pristine, the goal is now to Leave No Trace and pack out whatever you pack in. Yes, that means that too. If you poop it, you bag it and pack it. Before the trip, we were given blue bags. We were instructed to use them to poop in if there were no toilets or outhouses. So, in Camp Muir, we were all obsessed with the concept of pooping as often as possible so as to not have to either poop at high camp in the "shelter", or to have to unclip from your rope and poop on a completely exposed glacier on Summit day. So, we all pooped as often as possible in the most foul outhouses ever. I almost gagged and barfed after my first trip to the out house. The best part was how the smell stayed in your clothes for hours after. Suffice it to say, I timed my poops perfectly and never had to use a blue bag. Amazingly, no one on our climb blue bagged. I wonder if thats a record?