CD stuff into Australia (and New Zealand)
Ok,,, here's what I would do
I was in Brisbane only a few weeks ago.
Put your tetra's into your suitcase - you will not be permitted to take them on the flight as they are liquid. If you want bars or sachets, that's fine to take on board. You will need to declare them ALL in Aus. They have very very strict guidelines on bringing in food into Aus (and NZ).
That said, it's prepackaged and they won't be interested but you still have to declare them. You will face a $200 fine if you DON'T declare them and they pick you out for a search!
They will also put sniffer dogs around your case, handluggage, you, so be up front and there will be no problem.
Have an amazing holiday
Mikki x
p.s. i took all my stuff, tetras, sachets, bars with me and declared the whole bang chute and they were not bothered in the least!