Calgon 2in1 protects all important machine parts from limescale and grime deposits - heating element, drum, hoses and pipes as well as all parts of your washing machine which come into contact with water - from the start of the wash cycle. The machine is also kept clean and odour-free: Calgon prevents the deposit of grime which produces odours and detergent residue in order to prevent the formation odours. Trust in Calgon 2in1, for a clean machine.