If you know the batter is sacrifice bunting, we want him to bunt the ball so that we get a free out. So throw a pitch that he will bunt at.
If there is a squeeze, throw the ball eye height and down the middle. This will result in either a bad bunt or an easily received ball for the catcher. Do not throw up and in because that is a lot harder for the catcher to catch and we really do not want a passed ball.