Last time I was there three of us got three large bin bags and filled them with as much trash as we could carry. Barely made a dent in what was there. Of course, we put them on the boat and disposed of them back in SP.

I haven't a clue what the wardens there do, nor where the very considerable sums of money collected go. If anyone can convince us that this isn't just another scam to separate tourists from their money, here would be a good place to say so.