Bleach won't get rid of limescale." Debbie Allen advised: "Harpic Black; leave it overnight to soak and it will come straight off in the morning." According to the members of the page, a solution ...
Echoing the sentiment, Sarah Daines said: "Black Harpic. Scrub with a brush then leave for as long as you can, then flush. Bleach won't get rid of limescale", reports the Express. On the same note ...