I see that "eradication" has been declared in most of those trials, but I also see that formal "eradication" is often followed by renewal of the trial, recovery of the population, or "complete eradication". I'm forced to conclude that "eradication" in this context does not have its usual meaning.
That said, it does look like this is usually a pretty successful method of ongoing population suppression.
That said, it does look like this is usually a pretty successful method of ongoing population suppression.