When replying to a post or comment I get the option to save my draft if ever I exit the reply. Stupendous feature!

But I'm pretty sure I've forgotten to go back at least some times and will have unfinished drafts saved somewhere.

Is there a way to check on these and/or remove these?

Do they get auto-removed, and when?

Or will they be stuck clogging up my device data until the end of times?