Re: Diatomaceous Earth Circle around Hive?
Diatomaceous Earth is also a killer to bees, any bees coming in contact would be at risk. Doubt it would kill the hive, just some of the bees.
We don't have SHB in my country so can't comment on them, but if we ever do get them, personally I'll be looking at some way to make sure the larvae do not successfully pupate. Be it some kind of poison, trap, funnel, or whatever. In theory anyway, if every beekeeper worked on preventing larvae reaching maturity, they should cease to be a problem. From my reading, most current methods seem to be targeting the adult beetle, rather than breaking the breeding cycle.
44 years, been commercial, outfits up to 4000 hives, now 120 hives and 200 nucs as a hobby, selling bees. T (mostly).