Table manners

One of my roomates always makes noise while eating at table. I didn't like the noise. So I told him about table manners. There are two thiings we have to keep in mind. First, we should not make noise while eating or drinking. Second, we should not burp which is considered very rude at the table. My roomate seemed to be in the habit of making noise at the table. He dicided that he should change the habit.