In reply to CharlieMack:
Fresh urine should be fine. However, it does quickly decompose to become ammonia.....
If the harness is a personal one, fine. Matey can piss on it, stink it up, etc. (as long he's not my belay!)
If a group harness, well, common sense says they should be rinsed, if only for reasons of hygiene.
S
PS
Dirty feckers.....