Space program contractor Hamilton Sundstrand is seeking urine from workers at the Johnson Space Center in Houston, Texas, as part of its work on the new Orion space capsule that eventually would take astronauts to the moon, according to an internal memo posted on the Web site Nasawatch.com.
The need is voluminous: 30 liters a day, which translates into nearly 8 gallons. Even on weekends.
I'd say give them plenty of stuff to drink, especially coffee. Caffeine is a wonderful diuretic for me. :)