Having hard time breeding

[meow_mix450]

Hey

I need some help, i cant get the superworms to change into bettles, i have heard that i need film canister(sp) but i dont have the money to get them, and i dont think any photoshop will give me them for free. So what i have done is got an ice cube tray and threw in some oats and a peice of carrot. I taped the top and poked holes....Now they have pupated and im just waiting for them to become bettles. But my other container just with superworms they arnt pupating at all there just staying as worms. Last question is can i mixed bettles with the worms? Or will they eat each other? Its been weeks and im having trouble to start off.

Thanks

Meow