Dunno... In my country, you put your garbage in special bags on your front door once a week. They get collected. We have to sort our garbages: plastics and metals (mostly use to wrap food) in one bag, paper in another one, biological stuff (plants, unused parts of vegetables, etc) in another one and the rest in the yellow bag. Nice and cool (although I'm not sure how useful it is in the end).

Now the funny thing is that you get to see other families' trash bags once a week on their front door and there are big differences. My family has a tiny yellow bag every week and a blue one every other week whereas many others (with comparable family sizes) have 2 yellows at least and 1 blue every single week.

My guess is that they eat a lot of food coming from the supermarket: lots of wrapping, lots of cans, etc. It's an informed guess because the blue bags are transparent :-)