Tree frogs vrs. Darts for beginers

[Pocket Frogs]

Ok I would be able to handle buying crickets at the store, but I can't raise my own fruit flies like I am seeing everywhere.

[DonLisk]

Fruit fly culturing is a simple and pretty cost effective process. I actually just by pre-made media for the cultures from both Joshsfrogs and Black Jungle.
Mix up, add flies, and 10 days later you have flies.

There are also a pile of good do it yourself mixes for media that is all items you probably have in your home.

[Pocket Frogs]

Yeah, I have coaxed myself into being able to culture flies, but I am going to put tree frogs in my viv, and poison dart frogs in another later on. So the flies are not a problem now. Could I culture crickets for my red eyes? Would they eat fruit flies like the darts?