About mold: mold is a spore that starts from a food source and typically floats in the air to a new source. Refrigerator's internal air currents may bring mold from cheese or another source and deposit mold onto your cocoons within your HumidiBee.
What to do: Vigorously rinse the cocoons in cold water and pat them dry on a towel. Using Clean Bee, spray the surface of the cocoons with a fine mist, roll them, and spray again. Clean Bee kills mold but does not prevent it.
Place your HumidiBee within a paper lunch sack and close it. This may reduce new mold from occurring. Continue to periodically check on the water level and mold presence.