Criminal

When I moved into my new condo I took a rubber floor mat with me. It was a rubbermaid thing for putting wet shoes on. I noticed it was dirty, and so I put it on my balcony and hoped that when it rained, it would soak enough so I could scrub the dirt off.
It took me several days to notice it was missing. I assume that the wind blew it off to somewhere else. This irks me. One, for being stupid enough to do something like that. And two, for not being able to find a good replacement anywhere.
It’s been raining non-stop today. It’s just cleared up so I went out onto my balcony to just be outside. I looked down, and clear as day, I can see my rubbermaid floor mat on the balcony of the people two floors below me. Still dirty.
It’s been a year since I lost it, so it would be awkward to try and claim it. Even if I’m wrong though, and it isn’t mine, I would like to know where they got it, so I can get one too.