I was sceptical when I bought this product but decided to give it a try and it really works and is money well spent. I gave my toilet a thorough clean and descale before I put the two magnets (one each side) in my toilet cistern and then waited - two months later there is still no lime scale, even though I live in a hard water area. My toilet is so much easier to clean now, it just needs a quick freshen up and wipe round. I no longer need to buy toilet chemical limescale remover so it is better for the environment, will save money and will save me time scrubbing off the limescale. Definitely recommend.