Vanish
Does not clear Irn-Bru from carpet.

but neither does sandblasting, sulphuric acid or fire.
(magic the cat will someone please think of the kittens, Tue 8 Sep 2009, 13:25, 2 replies)

That's because
The active ingredient in Irn Bru *is* sulphuric acid.
(Vice Admiral Sir Charles Cockbrush KCB MBE DSO, who is finding it increasingly difficult to log into b3ta.com wants to duck your aunt and kick your puppy, Tue 8 Sep 2009, 14:53, closed)

Apparently:
These days, every nuclear plant in the UK is equipped with Carpet Offcuts pre-soaked in Irn Bru*. In the event of a core breach, these sections of carpet can be used to safely contain any danger; because nothing can shift Irn Bru stains.
(The Incredible Sulk Finally remembered his password on, Tue 8 Sep 2009, 15:39, closed)