I want to get flies for my chams but I have a few questions before I proceed. If I order them online, will they be in the larvae stage or will they be ready to eat? Will they have wings or are they flightless? Do I just toss a few into the cage? I see that a lot of insects need to be raised before feeding and I can't commit myself to doing that because of time and mostly parental purposes =/ What are some easy alternatives to worms and crickets?