Harpic White and Shine Original with Baking Soda deeply cleans killing all germs and viruses, leaving your loo sparkling white clean. The formula provides excellent hygiene, eliminating E. Coli and Rotavirus. It's formulated with baking soda to clean idealy and return your loo to its natural gleaming whiteness. Harpic and You: Before regular cleaning 7 out of 10 people flush an empty toilet. Harpic is so powerful you do not need to pre flush to get ideal results. And you can even save up to 1375 litres of water per year.