Canned Food??

[ShawnBC]

On Zoo-Med website, there is a whole lot of food in can for different kind of herp, example: there's bearded dragon pelleted food diet and such, and there's also T-Rex offering a diet program for crested gecko. So my question is; is this kind of diet good for the animals, because they say they provide all the vitamins, calcium etc needed by the animal. Is it a good idea, or shoul I stick to crickets? Also, do herp would eat dead crickets or they absolutely want live crickets???

Thanks for the responses!