What's the best toilet descaler?

[BertieBotts]

I'm ready to throw anything at it. Coke, vinegar, power plus stuff is doing nothing :(

Sorry, not Power Plus. Domestos Grot Buster.

Try viakal

I bought Parazone limescale tablets for ours. I had tried the coke, the vinegar etc but nothing worked.
Saw these in home bargains and left overnight and they worked a treat. The effect seemed to last as well as I did it a while back and hasnt needed doing since

Lower the water line by pushing the water over the u-bend with the toilet brush. Then get harpic powerplus and squirt half a bottle load around the rim so the whole bowl is covered. Leave overnight if possible. Then scrub with toilet brush and it should loosen.

Harpic 100% limescale remover.

Always had great results from Tesco limescale remover. When you've tackled the limescale, I find magnoloo great! Only using 1, in a hard water area, and was suprised at just how effective it is. It's supposed to last something like 10years too if I remember correctly.

Sainsburys Toilet Limescale remover (the cheap one in a blue bottle) worked wonders on DH's bachelor pad loos when I moved in. I left it on overnight, with no bailing or scrubbing, and when I flushed in the morning the thick, mingling, crust of Limescale below the waterline was gone. It's a miracle product, though it smells awful - really chemically.

I second Parazone tablets- really really good. Recommended them to a friend recently who had loads of 'build up' (snorts at technical terms!) and it cleared the lot overnight.

We live in a hard water area,and I give the loos a parazone treatment yearly.

Citric acid, bucket loads works every time! Think im seeing a loo pattern to my replies tonight haha