Board Thread:False Info and Speculative Discussion/@comment-24.130.28.230-20150721180826/@comment-1487677-20160130030808

Deaton said the laws of the supernatural may not be as concrete as they once were. Also we've only seen a handful of supernatural creatures come into direct effect with mountain ash (werewolves, kitsune's, oni and werecoyotes) and not nearly as much interaction from the supernatural creatures introduced (berserkers, werejaguars, wendigos, hellhounds, skin walkers and kanima (implied but not directly shown)). There could even be exceptions that deaton is not aware of.