Trash in Japan is very confusing. Everything has to be separated and put out on different days. I had the trash system figured out where I used to live - I put it out in the large metal cage on the designated day for what ever kind of trash it was.
Here inside my new apartment, I found a ton of trash and a poster with the trash calendar. I knew how to separate it and could read what day to take it out. The problem was, I didn't know where to take it. I walked all around my neighborhood and I couldn't find any large metal trash cages. What was I going to do with all this trash left by the previous resident? Finally, I found this in the back corner of the parking area behind my building.
On the designated trash days a blue net appears and everyone puts trash bags under the net. The days the trash isn't picked up, no blue net appears. It's a good thing I kept looking and saw the blue net with trash bags under it. I've been putting it out a few bags at a time on the proper days. Friday was pet bottle day and there was no blue net - I have no idea why it wasn't there. I had collected a big garbage bag of pet bottles from all over my apartment and balcony and I wanted them out. I ended up carrying them to the grocery store where there is a recycling area outside the entrance. I'm looking forward to getting the last bags of plastic trash out next week. Having ones own trash is one thing, but I really hated having someone else's trash to get rid of.