Cavers who are regulars in a particular cave and know it well will be in a good position to recognise items that have newly appeared in the cave. They are also the ones most likely to know what "non-tourist" activities are current, and which ones are history. I suggest that those who are most familiar with a cave take on the job of working out what can be taken out and what should be left, by consulting with others if required. If a caver is not familiar with a cave and there is some doubt over what should be left, then pass the word on to those who do know the cave. The "Adopt a Cave" scheme was pretty much what I have described, I think. The thing is, once a cave has been sorted out, any new items that appear will be even easier to spot. This is, I think, the common sense approach. I agree that the slogan we are being spoon-fed is not appropriate, but the scheme's objectives are admirable.