[daisycutter]

mealworms are beetle larva that are a pest in grain stores there very hard shelled so only feed them to fish with teeth
big maggots are bred on animal carcass waste there nutritional and soft bodied i personally wouldn't stick my hands in a tub of them they come in many different sizes due to species ranging from tiny fruit fly maggots up to the large horse fly type the dyed types are not harmful as the dyes are food type dyes that are commercial safe