door-to-door Meaning and Definition
Object reference not set to an instance of an object.
Object reference not set to an instance of an object.
Door-to-door is a canvassing technique that is generally used for sales, marketing, advertising, or campaigning, in which the person or persons walk from the door of one house to the door of another, trying to sell or advertise a product or service to the general public or gather information.
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