I had no luck with Peppermints either, but my Copperband Butterfly has worked great. It's my second one, and they are delicate and hard to keep, but for Aptasia they work great.
BTW, does the Garf stuff work on Paly's? I know it sound horrible, but I've got blue Paly's in my tank that have really become a nuisance. I've tried Joe's Juice and the other stuff (Blue something?), and they both knock them back for a while, but the little buggers always recover, even with repeated doses.
Stephen