Well to skip the Air Head vs Nature's Head debate, I have a C-Head by Cap and it uses regular grocery store bought gallon water bottles (get the screw top type with a good handle) for the pee collection. Look for two strong canvas tote bags that will hold two bottles each and off you go to a tree or toilet. You can also buy a diesel bottle in matching yellow but I like the clear ones for motorcycles. I get a week to two weeks of user days out of the waste five gallon churn bucket. Paper waste goes in paper bags (waxed ones if you can find them) for disposal or burning. At sea, you can have a Viking Poop Paper Funeral with some wood to float the barge and a bit of accelerant, major fun for me! Flat out this is better than any holding tank toilet I have owned. Nothing to clean or repair, I skip the ventilation fans/duct (no need in my experience), control any bugs with diatomaceous earth/wood ash/nasty chemicals, and dispose of the cedar shavings/poop mixture by deep burial, small at a time flushing, into a dump station, composting, or if I put the mixture to the gallon of cheap 99 Cents clorox in a strong trash bag + wait a day and then toss in the dumpster method. Nothing survives 24 hours in a 25% mix with clorox bleach. OK, I am waiting on all the disagreements, best part about a C-BRATS post is fielding the fiery darts which I often deserve (I think Bob's comments are always on target - ouch!!) Bob in Nevada