When using the california mini queen cage for introduction keep in mind that the release candy may be mostly chewed away from inside by the caged companion bees. You cant tell by looking. I had 4 of them this spring and some were released in less than 24 hours. I just got another queen and this time I poked in some more candy. The tube could not have been more than a third full. I have the cage hung between frames so I can just peek down in at the upper end of the candy tube where the hives bees have access. I got away with the quick release last time but maybe just lucky.