I only got them sunday so it could be that they had fed recently, so I will wait a week then try again. They are in 2/3s of a Large Flat faunarium (it comes with a divider. Once they get bigger I will take out the divider and give them the whole thing.
No, what I did was feed them one each with tweezers that they took, then kill 4 more (crushed heads) and leave them in, no more were taken. I didnt want to leave them in live unless they bite.
Next weekend I will just tweezer feed each until it is full up!!