I am so amazed that I was able to save a laying worker hive with this device. What do you all think about this??
Glad to hear you were able to "save" this hive.
The hive was probably queenless for 30 days before laying workers developed, and another 9 days before you confirmed drone cells being capped, and then with a three week queen introduction, you are looking at a full 60 days with no worker Brood. Around here in the north, this would almost spell certain doom losing that much production of fall brood going into winter. I guess in California you can get away with stuff like that.
Of course introduction frames work. It's just not my preferred method to deal with laying worker colonies.
Congratulations on your success.