How to Deal with Bees Robbery?
Wide open entrance makes the hives vulnerable to invasion. During the ribbing season, reduce the width of the entrance to the level that only one bee can enter at one time. You can use entrance reducer or grass stuffed clumps to reduce it. Minimal entrance helps the attacked bees to defend against aggression more effectively. While reducing entrance keep an eye over temperature. If it is significantly hot, narrowing entrance can impair ventilation.
Queenright Your Hives
Bees are tended to attack queen-less hives more that the queenright ones. Make sure to queenright all your hives in the robbing season. Furthermore, combine all your weak hives to create some strong ones.
Cover the Hives
Soak a bedsheet or a towel in water and cover the hive that is under attack. It will prevent the attacking bees to enter the hive. Resident bees seem to be able to find their alternate ways to enter.
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