Why do you wipe your feet before you come in to the house?

Why do you wipe your feet before you come into the

house?

Its important to wipe your feet before you go in a house because your feet could be dirty and because you won’t the floor dirty. It is also polite and respectful because when you enter another person's house because they want your feet clean before enter the house so their floor won’t get dirty. In china you don’t have to just wipe your feet but you also have to take off your shoes. You have to wipe your feet before you come into the house because you don’t want the owner of the house to clean up all the dirt or dust you brought in the house.