Clearing a severe main drain or sewer line obstruction requires heavy-duty mechanical equipment rather than standard chemical liquids. Plumbers rely on motorized drum augers, sectional sewer cleaning machines, or high-pressure hydro-jetting units to physically shred tree roots, break up dense sludge masses, and push foreign obstructions completely out into the municipal sewer main. Callout type="warning" title="Hygiene Warning": Avoid chemical openers for main line clogs, as they cannot cut roots and create severe splash hazards. Verification: Run multiple household fixtures simultaneously after mechanical clearing to verify full pipe capacity.
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