Let's see I have heard Yellow Coris, Green Coris, Mandarin and Target Goby, Target Goby only. I had some flatworms and my Target did not seem much interested in them that I could tell - although 2 others I know swear by them. I tried dipping corals and they seemed to slowly fall off. I followed that up with Hydrogen Peroxide dip and they dropped rapidly. If I have the problem again I will probably try the H2O2 again and if I see any later, follow that up with Exit chemical control in the tank. The problem with using the Exit initially is if you have a bunch of them you need to spend a bunch of time trying to vacuum them up as they die to try to keep them from releasing too many toxins back into your tank. If it's just a few stragglers that shouldn't be much of a problem, but I would still keep my little 1/4 tubing vacuum handy in case I see a lot more falling than I originally saw,along with some carbon. TMSAISTI
Bill