Had same problem with DS, did the same as others. We did the no with a deep voice, and if he continues put him down. And since he's had teeth not as much of a problem. Plus I can tell the signs when he's about to bite down. He unlatches, and normally does a little smirk, so I can warn him before he does it.

Sent from HTC wildfire using TAPATALK, so forgive any spelling errors its a small keyboard.