S.J.
I run a daycare in my home and biting or any other misbehavior is not tolerated ever. It is important that all children are safe where they reside or have to be due to their parents having to work. It is also important that children know their boundaries and what is acceptable and not acceptable. My rules for my daycare home are repeated every morning when my children arrive and they are reminded through out the day so that it's sticks in the child's head. Since kids are taught and trained by repition, if you keep repeating the rules and explain the consquences, it shouldn't take long for that behavior to change. I use positive reinforcement and offer rewards for good behavior. My oldest son used to bite and i bit him evertime he attempted to bit me or anyone else and within 2 days it was over with and my oldest son has never bitten anyone ever since. You could always just talk to the parents of the children that are biting, most parents will take care of the problem for you, i know i would if my child was doing that, i would never leave it up to the daycare facility. Good luck I hope everything works out for you.