When the last person gets out of the shower, spray down the walls with some shower cleaner. Quickly disinfect the toilet bowl each night. Turn the dishwasher on. Toss a load of clothes in the washing machine. Dust a few pieces of furniture. Vacuum a room. File a few sheets of paper.
You get the picture. Each of the items mentioned above just takes a few minutes--some even take a few seconds.
20 minutes per day, comes out to just over 2 hours per week--which is a very reasonable amount of organizing and cleaning time for the average household.
However, leave cleaning tasks for a week or two and very often the situation will get out of control. The tub will need to be scrubbed. The laundry will be piled to the ceiling. Your To Be Filed pile will be overflowing.
Let it go too long and deep-cleaning and heavy organizing time is required, which is much more time-consuming than simply organizing and cleaning a little bit each day. Whereas you would have spent just 2 hours in a week, now you'll find you have to spend an entire Saturday deep- cleaning and catching up.
Two hours versus seven or eight hours? That's a no- brainer.