Prepare the Drain to Prevent Odor and Debris

What happens here

Before beginning work, it's essential to prepare the drain. The presenter removes a dirty rag that was previously blocking the drain. He then inserts a clean rag inside a plastic grocery bag and pushes it down into the existing pipe. This serves to block sewer gas from escaping and to catch any debris from the cutting process, preventing it from falling into the sewer line. It's important to leave enough of the bag/rag accessible for easy retrieval.