Those are the WAG bags used with the P.E.T.T. toliet system. They work well! The bags have some kind of a gel in them that absorbs the liquid. Reminds me of those mushy things you put in the freezer. How technical of me! Anyway, you can literally seal the bag and throw in the dumpster. I believe they're something like a buck or two each, but worth it.

Just google P.E.T.T. toliet (about $90), and you'll see the WAG bags that go with it. It's a nice, compact system without any blue colored water or smell to carry--yuck! I use mine with the Porta Privy (great for showers too) on extended trips. The porta Privy is a great little tent enclosure about 4' x 4' with good height. It's a little challenging to collapse at first but works well. Don't try folding it up after too little sleep--ask me how I know;)

Troy

<<well, i can't find it ...

but i recall seeing a company on some show on the tele that has
developed a disposable bag for the army and emergencies and, one might
suppose, campers and the bag contains some sorts of friendly organisms
what dispose of and convert the human waste (fluids and solids) into
nothingness.

so you can poop/pee, close the bag, and toss it into the woods.
literally.>>