I found an Ozone bar on one of the rocks by the car park at Woodies about 10 days ago (sorry I didn't post earlier I left to Sydney the next day and forgot about it).
It looks pretty rusty so suspect it's been there a while.

If you think it's yours reply to this message. I'm away at the moment but will be back in Perth on 19th November. The bar is at my house in Perth so I can always give you the contact details of one of my housemates if you want to grab it before.

Cheers,

Maeli