its not the live food itself that i am opposed to, its the high possibility of parasites and diseases, present in both store bought feeders and wild caught animals. in this case i would be concerned about many problems with frogs being they are an amphibian and absorb any chemicals in their environment. if i fed live food it would only be something i bred personally (which i am in the process of). on the opposite hand if you dont mind the risk of parasites and diseases (which i think your animals health should be top priority) the frogs may not be threatened, but overpopulating, in which case it would be good for you to take them out of the ecosystem and feed them (again, may not be so good for your animal).