Ruth replied:

I would be very happy to thank them for cleaning up the French Line - see previous mention about cleaning up the Desert (in the uproar on trailers earlier). Maybe those people passing through the Desert might like to bring their rubbish into Birdsville - the first place you pass after crossing the grid from the Desert is the Birdsville Tip - they could pop in there and leave the rubbish. I was out in the Desert at the weekend and it was spoilt by having to clean up rubbish - just off the side of the track on a claypan - especially disposable (this word does not fit) nappies.
So a big thank you to those two boys and most of the other people who do bring their rubbish out. Congratulations. Thank you Ed for bringing this to our attention.