[Pil-pc-oceania] snail repellent plants?

[petra.kahle at haztech.com.au]

Thank you very much for advice on fox fencing and oca supply.
Both problems have been solved now.
We will make stronger chook domes with skirts and the outer fence for the
whole garden will just keep the people out at certain times.
And Graeme George will bring some oka to our Permaculture Melbourne AGM.

Now,
A friend was asking me today how to repell snails from her yard without
harming them in anyway. Do any of you know what plants may repel snails?

I only remember that the sometimes recommended saw dust only works sometimes.

cheers, Petra.