What They Found: Yeast and mold
How to Clean It Properly: Turn the icemaker off, empty the ice from the ice bin and wash the bin with mild dish soap and warm water using a sponge or soft cloth. Wipe dry with a clean towel. If you’re also cleaning the refrigerator’s water dispensing system with vinegar, be sure to throw away the first batch of ice, since it still might taste sour from the vinegar solution. Clean monthly.