Well, it looks like the wave of illegal immigrants to San Francisco―and to other municipalities in the (not so) great state of California―has brought with it, a veritable wave of poop:
https://www.forbes.com/sites/adamand.../#539ceff75ea5
At least they'll be able to cultivate a bumper crop of roses for next year's Rose Bowl game.
You can't make up stuff like this.
ETA: And yes, there is reportedly an app for it. Reporting it, that is; not depositing it.