We have 15 to 25 million dead Ash here, depending on who's doing the counting... however I've been treating well over 200 Ash a year since 2001 and they are for the most part doing very well. We have found that the Ash is a pretty tough customer that if given half a chance can compartmentalize moderate to minor damage and survive. I think extinction is too strong a word IF treatment options that are available are used.