Have I done something wrong? It is the second time I am putting my blue bags outside and they don't pick them up - the rest of the street have been collected. Cheers.
Are you sure you filled your blue bag only with the stuff which is indicated on the blue bag itself like only plastic upto 5 liters & etc. Cheers
You might not want to put the plastics that are not accepted in the blue bags in the black bin. There are collection centres for these. Have a look at this INFOrmation page: Recycling in Luxembourg
If you follow the basic principles described, your black bin will always be almost empty!