Yes, there have been cases in polyhives. I remember there being early talk of landfill, but I know one who cleaned his in a hot bath of one of the sodas. Can't remember if Virkon is acceptable too - it has been discussed. I'm not sure whether there was a uniform policy or not but I can point you to the man to speak to if you are interested. I'll see him tomorrow night and I may ask him then if I remember.

There is funding in place for a new co-op to build a sterilising plant locally. This will take boxes and frames from any beekeeper, sterilise them in a hot caustic soda bath, and replace the wax foundation. The idea with that is not to clean up individual cases but to remove background levels on comb and boxes and help operations run more or less disease-free in future. There should be advantages in terms of chalk brood, viruses and Nosema too, and consequently the health of stocks in general.