Hi Randy & Chris > Chris, now you've got me wondering if that is why I rarely see > chalkbrood any more. Coincides with my switching to OMF's, but never > made the connection... You have me wondering as well. I changed my whole operation to open mesh floors more than thirty years ago and the incidence of chalk brood did decrease at that time, but I put it down to my increasing skill causing less stress on the bees. -- Regards & Best 73s, Dave Cushman, G8MZY http://melliferabees.net Email: [log in to unmask] Short FallBack M/c, Build 7.21/2.01 Son of ORAC M/c, Build 5.o1/2.o1 *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html Access BEE-L directly at: http://community.lsoft.com/scripts/wa-LSOFTDONATIONS.exe?A0=BEE-L