i don't know if you've tried this..it sounds really simple, but has really worked with owen.. when he started biting at xmas time, we just kind of pretended he was giving us a kiss(and moved away a little so he couldn;t latch on!!) and said "kisses" to him and made a fuss about him giving a kiss and after a few days he just kept kissing everyone, no more biting..he is a super smoocher now, and just kisses all the time..but not sure how this would go if he's biting other kids, there was only adults around, so it was a very united effort..good luck!!