Trash day

It is often the mundane, everyday day activities that are the hardest to figure out when you are living in a new place. If you are traveling, and stay for a day or two, you just leave your rubbish behind for someone else to clean up.  But we’re staying for 16 nights, we have to make sense of it.
I found the buckets down in the courtyard and figured out the colors of the buckets for recycling after a couple of days. We then decided to buy garbage bags to reduce the interaction with the off-site host.
This day I had everything thing ready to carry out the door as we left for lunch. When I got to the courtyard there were not as many buckets. I did get the glass and plastic deposited, correctly, I hope. But what to do with the landfill bag? As I started toward the street door, I noticed that the always-locked door was propped open and I could see the green buckets waiting street-side. Yes, it was trash day.
Of note is that when we returned an hour later, the buckets were back in the courtyard with the street door once again locked. I do wonder who did it.