Avoiding dog poo!

In France it's everywhere, it's their way of life,
It's their daily routine-they see it day and night.
I'll draw some parallels so you can really see,
No one can avoid inevitability.
Flyers at the union, questions during class,
Things like these just wait then they bite you in the arse.
Concentrate all you want, it only takes one lapse,
For your brand new trainers to smell of canine crap.
Spot it on the pavement, or lurking on a bridge,
Just do whatever you can to avoid that familiar squidge!