Is Door-to-door Sales Marketing Still Effective for Fiber Internet?

Based on the provided content, there is no information regarding the effectiveness of door-to-door sales marketing for fiber internet. The source material focuses exclusively on door-to-door sales strategies for foundation repair contractors, specifically regarding advanced earth anchoring systems like helical piers and waterproofing solutions.

The content outlines how direct outreach can be effective for identifying structural issues such as settling homes, foundation cracks, and moisture problems. It provides a framework for foundation repair professionals to build trust through engineering excellence and ICC-certified products, but it does not mention fiber internet or the telecommunications industry.