The trouble here is that there seems to be feedback - anti-civilized behavior promotes itself. While they haven't looked at cultural side effects, I would expect a behavior's prevalence to influence its acceptability.
Where can the loop be interrupted? Probably easiest at the point where no minds are involved, it's merely physical mess. So, aggressive cleaning. But for that to be realistic, the spigot has to be closed a little. Hence, bans on litter precursors.
Where can the loop be interrupted? Probably easiest at the point where no minds are involved, it's merely physical mess. So, aggressive cleaning. But for that to be realistic, the spigot has to be closed a little. Hence, bans on litter precursors.