What is this object used for? (Photo Included)

[Emmmie]

Hello All,
We live in a neighbourhood with a lot of nice green places where the children can play, or this used to be the case.

We have now spotted suspicious looking characters out and about, sleeping in the bushes, defecating in our car garage(s),staring at the buildings, trying to force open a car and get in ...etc.

They have also left 2 of these objects behind in the bushes. Any idea what these objects and what are they used for?

Thanks so much!

Looks like an IV bag
I can't see any more than that

It does look like an IV bag, but the needles are missing. We have seen at least 2-3 of these in the bushes, so I do not understand how they got there and why.

A drainage bag for a catheter or for administering dialysate solution into the abdomen (CAPD)

Needles aren’t part of an IV bag, the tubing is connected to a needle placed in the skin which comes in a separate Sterile pack

Ahh, thank you very much! I understand now.

Looks like a drainage bag that attaches to a catheter.