People use it, but BG doesn't like it very much and has never used it himself.

BG forgets the name of the mall in Kelapa Gading. BG called it the Ace mall because it has a Ace hardware store.

Anyway when BG was there he noticed a pet store in it that sells lots of Zoo med products. BG seems to remember they had some substrate products. You can try there and see if they have anything you might use instead of importing it yourself.

You can always use newspaper. BG doesn't like that either, but plenty of breeders use it with success.