What is the process of drain rodding and how can it help clear clogged pipes effectively?

Drain rodding is a method used to clear clogged pipes by inserting a flexible rod into the pipe to break up and remove blockages. The rod is pushed through the pipe until it reaches the clog, then it is twisted and pushed to break up the blockage. This process helps to effectively clear clogged pipes by physically removing the obstruction and allowing water to flow freely again.