HI.. MY BABY IS NOT BITING THE WALLS OF MY ROOM AND FROM HIS PART OF THE HOUSE.. THE HALL OF ALL THE ROOMS.. HE SUDENLY STARTED BITING THE WOOD ON THE LOWER PART OF THE WALLS. I CAN'T MAKE HIM TO STOP. IM WATCHING HIM ALL THE TIME TO TELL HIM NOOO BUT HE SEEMS TO COME BACK AGAIN AND DO IT. ANY SUGGESTIONS??