I’ve tried scrubbing it several times with bar keepers friend soft cleanser and although it improves, it never goes away completely and it always comes back.

close up picture of bathtub floor discolouration

  • someguy3@lemmy.world
    6·
    8 months ago

    I can’t see anything, but I second vinegar.

    Apparently the trick to cleaning is to use acids and bases where appropriate. Acid will work here afaik.