Accidental Discovery

So after finding some zoa eating nudis about 6 months back when I used to have a frag tank I have started doing treatments of flatworm exit every so often just incase something comes in with them.  I dip everything before going into my tank but still does not mean eggs were on there.  I did the treatment yesterday sense I was going to do a water change anyway.  About 20 mins into the treatment I noticed a lot of the little serpent star fish floating around dead.  After about an hour there was quite a few of them dead.  Not sure if this was a fluke but it killed off a lot of them.  I did a check today and there is still a few around in the tank but I had a lot of them prior to yesterday.
Reason I posted this is I know some people have asked how to get rid of them so if you want to take a chance try the treatment and see how it works out for you.  I would not recommend using flatworm exit without having a water change ready and be running carbon or have some in a reactor ready to use.  So proceed at your own risk and read the directions if you try this!
Also going to attach the article about using flatworm exit for zoa eating nudis.  Works like a charm and it will really implode/explode the nudibranch.
http://www.practicalcoralfarming.com/zoonudis.html