need advise on feeding my tree frogs

[jetoutant]

I have a Common American Green Tree frog and a Cope's Gray Tree Frog I have had them probably sense May 2011. I feed them once a week 20 crickets every other week they get dusted crickets. Is there any other food I can feed them besides earth worms or leaf worms or red worms that I can buy at a store. Are worms even good to feed them and how would I get them to eat them before the worms dig there way into the dirt sense they don't eat from human hands.