Just wanted to add my experience with Phoenix worms. I just ordered some, thinking they would add some variety to my little Greys' diet. I tried feeding them last night. One of the tanks didn't touch them, but the other one emptied the dish, and all the frogs were very fat looking next morning. However, looking in the tank later in the day, it does look like they passed through them pretty much undigested, which I'm really unhappy about, since, on paper, they looked like a really good food source.