Rodney,
How many colonies are you requeening? Where did the new queens come from?
Why did you wait 36 hours before installing queen cages? Why have you NOT
looked at all frames? Are the new queens still present? If I read your
message correctly,
you started this requeening around the 1st of April, and found EMPTY queen
cages
about April 10-15. Now, that is about 20 days ago, and you can't find any
brood.
Wow, something is BADLY wrong. Answer my questions, and maybe I can find a
reason.
George Imirie