Good, but an unavoidably biased method. They could identify about half the waste plastic items, and 11% of those were identified as coming from Coca Cola, which has some of the most distinctive bottle shapes, so is probably more easily identified.

There's a marketing lesson in here somewhere...

that should put an ever so slight pressure on Coca Cola Company to clean up their act.

Maybe we could tax companies based on how much of their litter can be identified on randomly selected areas for sampling.

Also I don't think most of other types of disposable products other than medium duty bags are branded... So tracking them down those that have branding or large labels seem obvious.