They are prefiilled with proporietary juice, yes. I have heard it MAY be possible to reuse one, I have no clue. I think there are also knockoff pods you can get to fill with yiour own juice to use, although why one would want to I do not understand.
But, I am not a pod person, I am PG sensitive and hence incapable of stealtlh.
Despite the shivery feeling I got when I vaped the kid's Juul, which is what happens with PG there was something IN it where I was like "Anna, that could get VERY addictive."
Every now and then, plaintive Juul users come on here asking about how they can replicate their Juul.
In most cases i say, "Buy another pod" but in this case I say.... Drive to Canada or whtatever. Unless it is illegal to carry large quantities of Juul mango pods across the border.
I have gotten PRETTY darn good at identifying what will cause "addictive tendencies" in me, maybe they have a bit of Fentynal in it. Who knows. It IS FDA approved after all.
Anna