Pull the lips back, and find the area after the back teeth. This is where the point of the stick is inserted. You then simply twist the stick to pry the mouth open. Pit Bulls should never go without a collar. They should, at all times, wear a good, strong collar, to which is attached a name tag listing your address and phone number.
Good choices are strong leather collars, or heavy duty nylon collars.
It will allow you to get a good grip on the dogs if a fight strikes and pull them apart as soon as the hold is broken. Remember that a fight may not always be preceded by growling, barking or posturing. One second everything is fine and the next the dogs are going at it. Excitement and external stimulus, such as a squirrel for example, could trigger a fight. A fight may also escalate out of rough housing, competition over a bone, a toy, or attention from a member of the family.