
Collecting from the rats
Given that you can't (probably) train a rat bouncing around in microgravity to use a miniature space-pisser, I suppose there must just be some way of extracting the moisture which appears in the murine environment (hopefully separated from the human environment). A worse possibility is my vision of six dozen pinioned and catheterized rodents doing their bit for recycling and the advancement of science, while wishing for a nice homely sewer somewhere.