I moved into a University accommodation that had an electric kettle that has shown it's age, let's leave it at that. Opening the lid all you could see was limescale build up all around. Absolutely disgusting and for weeks I avoided touching it. At one point I was considering just going out to Big W to pick up a new one but saw this come across my recommendations on Amazon for a couple of bucks. I thought to myself, what the heck do I have to lose and decided to pick one up. After following the instructions on the tin I inspected the now cleaned kettle and I must say it looked near brand new. The metal base where the water would heat up was clean of debris and was literally shining. Overall, I'm very satisfied with the product and would highly recommend it if your kettle needs an SOS.