Fill both sinks with a few inches of water, then pull both plugs. If water drains slowly from both, the clog is deep in the common trap or main line. If only one side drains poorly, the blockage may be near that sink’s individual strainer.
After plunging, pour a kettle of boiling water directly down the drain (if you have PVC pipes, let hot tap water run first to warm them). Follow with a mixture of ½ cup baking soda and 1 cup vinegar. Let it fizz for 10 minutes, then flush with more hot water. This works best on grease or soap scum, not solid debris. how to unclog double sink
A double sink requires sealing the opposite drain to create proper suction. Use a wet rag or a second plunger pressed firmly over the unused drain. Then plunge the clogged side vigorously for 20–30 seconds. The trapped air forces pressure through the shared pipe. Fill both sinks with a few inches of
Here’s a short, practical piece on the subject: After plunging, pour a kettle of boiling water
Feed a ¼‑inch snake through the drain opening past the trap. Crank it to break up or retrieve the clog. For garbage disposal clogs, use the hex key (Allen wrench) in the bottom of the unit to manually rotate the blades.
Place a bucket underneath. Unscrew the curved trap beneath the sink (hand-tight nuts usually need no tools). Clean out the sludge, food particles, or tiny utensil that fell in. Reassemble tightly.