In reply to planetmarshall (but not in particular):
> It's unpleasant, unsightly and there's quite a lot of it.
Why is it unpleasant or unsightly? That suggests a somewhat prudish attitude to bodily functions.
Shit is a somewhat different matter, since it is a health hazard, and tends to stick around (although not so much when frozen...); urine generally isn't.
> 50% of the population mysteriously seem to manage without dropping their pants every 5 minutes on the walk in, so it can't be that hard.
I don't think it's good that 50% of the population (assuming you mean females) don't urinate when they need to; it's not good for them to avoid emptying their bladder when the need arises.
I should point out that I don't make a habit of pissing all over the path, as I would usually go off the path for modesty reasons. But I just don't see what the fuss about a bit of coloured liquid is.
ps. are we sure it's human urine...?
http://www.strathcaulaidh.com/reindeer-in-the-caingorms/