The highly effective Magnoloo is the anti-limescale device specially created by Ecozone to prevent limescale deposits from building on your toilet. You will save money by removing the need to buy other anti-limescale products and it will last for years. Simply drop one Magnoloo descaler into the cistern to keep your toilet free from a build-up of deposits for up to 5 years. Chemical free, the Magnoloo treats water magnetically meaning that the calcium carbonate (limescale) does not stick to your toilet and instead flows out with the water. Product Advantages: Save money on purchasing other anti-limescale products which require repeat buying. 5 Year Guarantee Limescale free toilet.