A few dart frog questions?

[Reptilian Feline]

I have two types of D leucomelas, and lost 2 of the smaller ones in the heat wave this summer. I feed mine mostly on tropical wood lice, that I breed, and those anoying little flies that likes to feed on the poop from my African giant land snails. I have a couple of tiny plastic boxes where I get those flies to breed and then I swap out the lid for lids with holes in them and place them in the enclosures for the frogs to feed on. I have tried to feed them buffalo worms but they weren't really interested. I guess the worms doesn't move the proper way for the frogs to hunt them.

One of my leucomelas is a male and have this wonderful call that isn't anoying at all.

I find them easy to keep and they quickly learn where their food is. The only thing I can't do is dust the food since the wood lice are moved on a piece of bark and the flies crawl out of their boxes on their own. I do feed the wood lice calcium though so they should be high in that anyway... I hope.