AdvancedGel Ice Machine Cleaner will effectively remove limescale and slime â which are common problems in ice machines â and will clean all surfaces. Limescale is formed by the insoluble calcium carbonate coating the ice-making elements. Newly formed ice sticks to the scale and this jams the machine. Slime then builds up allowing contamination of the ice products. Slime can also give the ice a bad taste or odour. Clears heavy limescale and slime deposits Nickel and aluminium safe â suitable for all ice machines.