Prevent the build-up of limescale with this Calgon 3-in-1 Power Powder Water Softener  Choose from 600g and 1800g  Calgon has 3 neutralising actions: 1. Powerful limescale protection that helps prevent machine breakdown 2. Anti-dirt actives help protect from the accumulation of dirt and detergent residues 3. Helps prevent malodours forming in the machine Helps your washing machine work better for longer, whilst removing bad odours Buying Options:  7.99 pounds for 600g  22.99 pounds for 1800g