So the Co-op is not that far from here and this is one of their carts. The guy down the hall brings them home with his stuff in them. He hen leaves them at the end of the hall intad if taking them back. He dies not seem to be alone. Every now and then there is a bunch of them in the garbage room. I don't know who takes them back but sooner or later someone does. It's always the little ones too. I always in the past wondered why there are none if them to be found there at random times. I know there are lots of them so it made no sense. Now I understand. Now to just catch the cart fairy collecting them for the return trip.