i just had to post and say that thi prouct is brilliant!
wheni moved here the toilet was minging. under the water level was brown and disgusting and no amount of scrubbing and bleaching would remove it.
I put some Harpic in the bowl before i went to bed last night and it is now completly white..spotless!
i think its about £2 a bottle so not too expensive and it really is amazing.