This is basically a natural beeking method as it uses no insecticides. Instead the physical attributes of DE kills the SHB and their larva but cutting them. It can actually be digested by humans and is used medicial for stomach issues.
I am becoming a distributor for Perma-Guard DE. Please read my thread on purchases forum.
How do you treet the hive with DE?
Thanks USCBeeMan for the information.