i started several nucs this spring using frames of brood and added queens. All queens were released OK. In some colonies she started laying within a week or so, others are slower to "come around". How long is reasonable to wait before reaching a determination that the queen is not productive and taking steps to replace her? Also, if there is no capped brood left (and no eggs) will the workers accept a new queen readily, or should I introduce her with fresh brood (capped) from a queenright hive? /C.Crowell