Just a logistical question about how this works , does the pee reflect equally in a hemisphere normal to the surface, or does it reflect off the wall like a normal reflection.

If it is option 1, how does that work physically? Is the surface multi-faceted? Even with a hydrophobic surface I would still expect a normal reflection.

I don't really see what's so bad about peeing outdoors so long as it regularly rains, and you're not peeing in a way that will affect others.