To clear a double kitchen sink blocked on both sides, start by bailing out standing water and tightly sealing one drain opening with a damp cloth. Place a cup plunger over the open drain and plunge vigorously to force pressure through the shared P-trap. If this fails, place a bucket beneath the central plumbing, disassemble the P-trap and sanitary tee, and manually remove accumulated food sludge. Callout type="warning" title="Hygiene Warning": Place a bucket under the P-trap before loosening slip-joint nuts to catch stagnant wastewater. Verification: Reassemble the plumbing fittings and run warm water through both basins to verify smooth, balanced drainage.
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