Sorry man, but you are going to have to deal with live foods. Fruit flies are probably going to be the easiest to breed because they are fast breeding and dont smell as bad as the crickets. They also wont overgrow as the crickets would. Because their darts, they have the smaller mouths than most frogs, so if you dont want to deal with breeding insects, maybe try tree frogs or something else where you can just buy your average run of the mill pet store crickets.