Limescale buildup in toilets can be a stubborn problem, but there’s a cleaning solution that can help. Mrs Hinch fans have discovered the Harpic Power Plus Toilet Cleaner Gel, which has been praised for its effectiveness in removing limescale. Simply remove as much water as possible from the toilet bowl, apply the cleaner, and leave it overnight. In the morning, use a scrubbing brush to remove any remaining limescale. The results are impressive, leaving your toilet bowl sparkling clean.