Why Do Telephone Poles Never Rot But Fence Posts Do?

What happens here

This project details how to apply a specialized preservative treatment to wood posts, such as fence posts or pole barn posts. The process involves drilling holes into the wood at specific locations and angles, inserting copper boron preservative sticks, and then sealing the holes with plastic plugs. This treatment is designed to protect the wood from insects, decay, and fungi, significantly extending its lifespan, much like the treatment applied to utility poles.