Biting

[Deborah]

I'm in need of some good advice! What do you do when a toddler bites? I have friends staying with us for a few months, and their youngest daughter who is almost 2 is a terrible biter. She has biten both my babies (12 months and 19 months) a few times since she has been here. She only bites them when there isn't an adult about. We have tried to keep an close eye on her but sometimes, there is reason to leave the room (bathroom) etc... What oh what should we do?