I have noticed that it's common to see pet bottles with water (?! I think) left on the sidewalk of streets. Most likely to be seen in suburbian areas. Usually there is more than 1 bottle, sometimes quite a few (~5-6). Mostof the time there are boundled together with a rope around street electric poles.
First, I thought it's a conincidence, but now that I pay attention to it I see it very often.
What is it for
