User blog comment:WarrenWitch/Operation exterminate Grimm/@comment-3146930-20141020235634/@comment-5217560-20141021031609

I thought that about the earth dust thing as well, but her clean up job in the cafeteria changed my perception. Hmmm cloud making. But that would mean her base semblance isn't very effective.

Ah very good point. So perhaps an elimantion job around the four areas surrounding the kingdoms? Then some robots to patrol the borders day in and day out. I'm still curious as to why the kingdoms do not send out robots to protect villages though.Particularly ones that cannot defend themselves against the Grimm.