Aside from what Guy posted here and what Teri posted on RAG, I have found out that my mantis won't eat them....yet. I have only found the two, after removing them, I will wait and keep looking for more. If I find more and nothing appears to be disturbed or eaten by them, I'll probably leave them be. My biggest concern is that they could become a pest from simple numbers alon. The first one had already dropped a leg, when I looked in the mantis tank a couple of days later, one of them had dropped three legs after being moved....