[baroffoos]

Australia has it per state and they have the refund logo printed on the bottle label. Bringing bottles from another state will result in a fine if caught.

[code_duck]

In the US machines simply won’t pay for bottles purchased out of state. That’s my experience in Michigan, anyway.

[kwhitefoot]

For the vast majority of bottles that's not a problem surely.

Edit: same here in Norway, Swedish and Danish bottles are not redeemable here but it is definitely not a big enough problem to matter.

[code_duck]

Not saying it’s a problem. It is that way to prevent people from buying bottles in Indiana, not paying the deposit, and driving to Michigan to get 10c a bottle.