Fixing a gurgling drain requires clearing air restrictions or partial pipe clogs. Inspect your roof vent stack from the exterior to ensure it is completely free of leaves, twigs, or animal nests that block atmospheric airflow. If the vent is clear, use a flexible hand-cranked drum auger to clear any partial grease, food, or hair restrictions lining your branch drain pipes. Verification: Run water through your plumbing fixtures to confirm that gurgling sounds have completely stopped and drainage is smooth.
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