I was told that this would be the remedy for the gunge on the Soleplate of my Rowenta Steam Generator.
Sadly it isn't
Setting the Iron to its maximum heat setting, I applied the stick and waited-and waited.
Result? apart from a nice waxy mess spilling onto my ironing board-NOTHING!
In fact I think the gunge is worse now than before.
UTTER AND ABSOLUTE RUBBISH!