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Dysentery is not a true disease but a result of other diseases or conditions that prevent the bees from taking cleansing flights; it is also caused by food sources that are too water-rich. Typically the bees defecate inside the hive and all over the hive entrance and landing board. These conditions can be caused by poor ventilation and food stores that did not ripen into true honey.

A similar treatment to that of Nosema may help.

Keep hives situated in such a manner as to prevent too much rain or snow from accumulating on/in the hive. Ensure good ventilation and if a fall feeding is necessary, do so early enough to allow the bees to fully cure the food.