I would ask them once to stop doing this, and else make a complaint at the landlord. Let them keep their trash either in or dispose of it properly.
And as said I am referring to Zurich where all buildings have containers. Also Murloc was specifically referring to containers and not some third world BS canton w/o proper facilities where bags are put on the street on collection day
PS: Enjoy the Fasnacht.
Yep. All the trash piles up in Australia. You haven't heard of it yet?
I'll be sure to enjoy Fasnacht - thanks!
In Kt. Aargau and Solothun, you can drive to places like 'Recycling Paradies'
'entsorgbar' or similar places. They will take almost anything and open Mon-Sat. Check for one in your area. It is usually much much cheaper than the Gemeinde.