Hi NJK,
I have four fistulas with setons. What type of questions do you have? I would PM you but I actually don't know how to do that (despite being active on this site for years), but I can respond if you PM me.
It can be a daunting process and isn't fun. But please ask me anything you want, no matter how graphic, because I wish I had known more about them before it happened to me.
~Tammy