Are there many success stories, most of the posts on the forum are long-standing problems?
Yes, there are some who are successful early on with this. It usually depends on how quick the diagnosis is made, and how aggressive the person is with eradication. Also, those who can more easily see the mite, such as with the NFM, tend to have better (and quicker) success, than those who cannot see them, as with D. Gallinae.