People from the house go out and come in with a lot of dust.
The dust that people carry with them settle at various places in your home making it very dirty.Dirt is developed inside the house too.
Food crumbs and particles get scattered all over the floor of the house.
If you have a kid you can be sure that there will food crumbs all over the house.
You don't have to worry about people getting the foul smell when they enter the house if you regularly clean your home.
Cleaning your home also leads to a healthy life.