Hello,
I have used Thai tooth powder and mishwak. I also know about neem.
(1) Thai tooth powder
(1a) Viset-Niyom brand tooth powder, packet weighs 40 grams and contains;
calcium carbonate
sodium chloride
borneol
menthol and fragrance
Here's a picture on amazon;
https://www.amazon.com/Viset-Niyom-Orig ... B007NUXDUE(1b) Thipniyom herbal tooth powder packet weighs 40 grams and contains;
calcium carbonate
ammonium alum
borneol flakes
sodium chloride
menthol
crystal camphor
clove oil
peppermint oil
TR-1 compound
myrrh oil
sage oil
camomile blue oil
Here's an online reference;
https://thai-voyage.com/en/uhod/za-polo ... 00008.htmlI've found these powders useable in the field.
I don't carry a whole packet.
For each time I expect to brush my teeth (about twice a day) I take out enough to cover my index fingertip; wrap quantities in folded strips of aluminium foil.
It's very small and light.
(2) Mishwak is a stick from a tree; the following reference is helpful.
https://www.mcri.edu.au/users/dr-elisha ... alth-issueAnother good reference
http://earthdrifter.com/blog/2013/05/22 ... the-mouth/I saw it used in the Middle East.
I used it; no drama. Just a stick. No pain to use.
Although I haven't bought it in Australia, I have noticed that some online vendors sell it.
If you live in Melbourne, I think it would be possible to find Mishwak around Brunswick or Coburg where Arab traders operate. I would try one of the Arab grocery shops. It should be cheap.
(3) Neem: I've never used it but have seen it used in India where it was popular.
Here's a reference;
http://www.fishpond.com.au/Health/Neem- ... vQodYFYANAThe above options are alternatives to standard toothpaste. They are not the same, but forum member might like to try them as lightweight options.
All the best,