I'm a bit puzzled by this actually. Because of where we live (down a tiny lane) we have to take our wheelie bin down to the end of the road for emptying. Because we are lazy we tend to only put it out when it's full and not before. We regularly go three weeks without putting the bin out! It's just a normal sized bin.
But I don't understand how we create so little rubbish compared to other people - quite often on bin-day we see bins with their lids bulging (the same ones every week).
Do you fill yours every week? And what takes up most of the space?