Serbs are bread-worshipers. If the French say "A day without wine is a day without sunshine," the Serbian equivalent would be "A day without bread is a day I've not been fed." (Like that? My creation!) In any case, it is a major no-no to throw bread out in the trash. Old bread is placed in a bag and put somewhere where those who need it can easily find it, usually on a dumpster such as this. My guess is that depending on the bread's condition, it's either then used for human consumption or fed to animals.