Something like this I almost think of it as if... what would a teacher do at school. He'd probably be sent home.

If he inflicts so much pressure that he breaks skin I would send him home.

I would terminate if it were me. But we're all different, we all have different breaking points. I may try to shadow him for a week and see if that makes a difference, but my job is not to shadow one child. I understand they all go through phases, but, I can not personally handle 3 kids and a biter at the same time. Not in my house.

I'm so sorry you have to deal with this... and the fact that you're not getting the full story from mom and dad makes it worse.