In at the deep end!

[Outlander]

Easiest is likely thymol for three or four days when there is hatched brood (less likely to abscond). On and off, job done. Remove first capped brood to mop up any stragglers and should be OK until the autumn. Another alternative is to roll the bees in icing sugar and run them back into the hive. Dusting is not to efficient and can kill brood apparently, if too much is applied. I don't like apiguard, but apilife var seems quite potent. Not tried it as I use my own thymol mixture.

RAB

oooh....... and i thought it was all chalk brood