I would like to start some discussion of Marla Spivik's article in ABJ.  She
advocates periodic replacing frames and not using prophylactic treatments
with Terramycin.

As I have been replacing 2 frames per box per year and have requeened most
hives with Minn-Hygenic queens, it seems to make sense for me to try this to
preventing Terra resistant AFB from developing.

Comments?

Dave