I have never had luck with peppermint shrimp eating them. Not a single one. I once dropped $100 worth of them into my reef thinking they will help. Yelling die aiptasia!!! They did squat for me. If they have other food to eat they will. The only thing that worked for me was my copperband butterfly in the reef and a file fish out of the reef. The copperband destroyed them in my reef. After all these years my DT is free of them.