Thought I'd pass on a comment from my washing machine repair man (my daughter broke the door handle trying to get the door open before child lock clicked off), anyway he commented on how unscaled the machine was even though we live in a very Hard water area, we don't have a water softener , but I use a supermarket Limescale Prevention powder....not every time ,only when I remember ,but it is apparently doing the job. As they say every little helps!!