If all else fail buy a healthy Dwarf/Shortfin Lionfish or a Miniata Grouper make sure they are big enough to do the job .These fish work best when the lights are off or at night.When the job is done hook them out with fishing line.I maybe able to help you with that.Keep us posted.I have 5 damsles im trying to get rid of. ANyone know how to catch them? Anyone who is able to catch tem can get them free.lol Any one have any idea?