Every Saturday my family comes over to my house for dinner. It's very enjoyable seeing all the people that I love. My wife and I cook a large meal with plenty of food for everyone. We all sit at the table and eat and talk and laugh and have a really nice time. Once dinner is over we begin to clean up. We gather up all of the dirty dishes and silverware and rinse them off in the sink and then put them in the dishwasher. After the table is cleared off it needs to be cleaned. So I gather together a clean, dry rag and some kitchen cleaner, and spray the cleaner on the table. I make sure to spray all the sticky spots because they can be harder to clean off. I then take my rag and wipe it over the table, over and over again until the table is dry and completely clean. The table becomes so shiny and bright that it looks brand new. I then put the cleaner away and place the cleaning rag in the washing machine. After this I wash my hands thoroughly and then move on to whatever else is left to do. 
Question: Why did they decide to clean the table at the time they did?
They were done eating.