Is there such a thing?

As to many FF in a cage... My new frogs which are growing, so figured throw FF in every day. Now have FF everywhere in cage. Worried cage is to big and the frogs wont find enough to eat. I'm using a slice of banana to attract the FF to one area but I don't see froggies camping out the banana.

Will frogs get stress by to many bugs... or am i just being a worried newbie?

Thanks