We quickly notice any build-up of limescale in the toilet. However, we often tend to forget the cistern when cleaning or just give it a quick once over. This can have consequences. Limescale can also build up in the cistern and affect the operation of the flush mechanism. If you notice water trickling from the cistern into the toilet bowl, it’s time for some thorough cleaning. You can use the same product asfor the toilet bowl. Open the cistern lid, add the limescale remover and leave it to work. Once the appropriate period has elapsed, flush the toilet a few times and put the lid back on the cistern. That’s all there is to it.