The term 'door to door' can be replaced with various other synonyms that effectively capture the essence of this concept. Some alternatives include 'house to house', 'on-foot outreach', 'neighbourhood canvassing', 'street by street', 'direct selling' and 'residential marketing'. Each of these synonyms emphasizes the participatory approach associated with promoting a product or service directly to individuals in their homes. They convey the notion of personalizing interactions with potential customers at their doorstep, in order to establish a sense of trust and build relationships that can lead to increased sales. These expressions convey the importance of face-to-face encounters as a powerful marketing tool.