Excreting/exchanging of bodily material (fluids/solids) should be done in private. Some examples: going to the bathroom, passionate kisses, sexual intercourse, breastfeeding, spitting (on anything other than vegetation or surfaces not commonly walked on), etc.
It should be illegal to relieve oneself (urinate or defecate) in any place that is not specifically designed for such activities, unless it is an emergency and no facilities exist nearby. Regardless, relieving oneself without taking sufficient measures to conceal oneself from the view of others should constitute a crime punishable by $500.
Also, relieving oneself should be prohibited on all paved (sidewalks, roads, etc.) or maintained (grass, flowerbeds, etc.) grounds, unless sufficient measures were taken to adequately clean up the mess.
Leaving liquid bodily wastes behind in unapproved locations without an intention to clean it up within a reasonable period of time should be punishable by a $1,000 fine. Leaving solid bodily wastes behind without an intention to clean it up within a reasonable period of time should be punishable by a $2,000 fine.
In wilderness areas, the relieving of oneself should be allowed only at a distance of more than 10 meters ‘off the beaten path’ and only if solid wastes are sufficiently buried or otherwise covered up. Insufficiently treated or distant wastes would constitute a crime punishable by $250.