If the drain still runs slow after two rounds of this process, the mud may have compacted into a sand/gravel layer. In that case, call a professional with a hydro-jetter—it’s the only tool that truly blasts mud into solution.
You cannot dissolve mud with chemicals. You must liquefy, suspend, and flush it. The winning combination is: Snake → Boiling soapy water → Plunge → High-pressure flush → Repeat. how to dissolve mud in drain
Why Mud is a Unique Drain Problem Mud doesn’t stick to pipe walls like fat or hair. Instead, it settles at low points, elbows (P-traps), and horizontal runs. Over time, it compacts into a dense, sand-like layer that restricts water flow. Pouring standard chemical drain cleaners (acid or lye-based) on mud is ineffective and often counterproductive —acids may react with clay minerals to form a harder mass, while caustics simply pass over it. If the drain still runs slow after two
