They do
But you do also have to have some innate wit and realise that you don't need half a pint of Fairy in your bowl like you do some other types, otherwise the saving is lost. It's part of the reason their washing-up liquid spray thing failed; you were supposed to put one squirt on a sponge and that would do you, which made it very cheap to use. But people didn't understand that and tried to use it like regular washing-up liquid, which made it incredibly expensive.
(richardm, Mon 14 Nov 2011, 12:08, Reply)