The RBI hides might do the trick since the are really dark and secure.
My killer bee was like that for 5 days when using butter bowls, would not use her hides and then on the 6th day I received my RBI hides and put her face in the entrance and she slithered in and then 3 days later I took her out and then showed her the cool hide the same way and ever since then she uses both.
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