It's not just people who are minding their manners in Berlin - the bins are being taught to say thank you too.
About 20 bins in the German capital are being programmed to say "danke schon" when people drop rubbish in them as part of a battle against litter bugs.
The bins won't look too different from the 20,000 others currently in the city, but they're bound to surprise those who keep the streets tidy.
A cleaning services spokesman said the bins were meant to "raise awareness".
The bins' conversation isn't limited to "thank you".
They can be programmed to say other phrases in other languages as well.
Berlin officials say their litter problem is no worse than that in other places, but 'every city wants to make itself more attractive to visitors".