A kitchen sink starts draining slower after months of washing greasy pans and plates. Small amounts of oil can enter the drain, stick to the pipe walls, and collect more residue. If grease is causing a minor clog, one item beside the faucet may help. Dish soap can break up grease, and hot water can help move it through the pipe.
This method has limits. Food, hair, solid debris, or a blockage farther down the line needs another approach.
Dish soap can break up grease in the drain
Dish soap cuts through the same grease stuck to pans and plates.
Pour 1/2 to 1 cup of dish soap into the slow drain. Leave it for 5 to 10 minutes before turning on the water.
The soap gets time to coat grease inside the pipe and break it into smaller droplets.
Follow with hot water
Run hot water into the drain after the soap has sat for several minutes.
Heat softens grease while the soap helps pull it from the pipe walls.
Skip boiling water. High temperatures can damage some types of plumbing. Hot tap water provides heat without taking that risk.
Watch how fast the sink empties after flushing the drain. A minor grease clog may start moving again.
Baking soda and vinegar offer another option
Baking soda and white vinegar can also help with a small blockage.
Pour 1/2 cup of baking soda into the drain, followed by 1 cup of white vinegar.
Leave the mixture for about 30 minutes. Flush the drain with hot water after the reaction stops.
This method suits minor buildup. A large clog may need removal rather than another product poured down the sink.
Do not mix every remedy together
More ingredients do not mean more cleaning power.
Use dish soap as one method or baking soda and vinegar as another. Combining all three can interfere with the reaction between the baking soda and vinegar.
If one approach fails, the clog may involve more than a small layer of grease.
Keep cooking grease out of the drain
Prevention starts with what goes into the sink.
Cooking oil and rendered fat can coat plumbing as they cool. More material can stick to that layer and create a larger obstruction.
Dispose of leftover grease instead of pouring it into the sink. Wipe grease from cookware before washing when possible.
Small amounts may still reach the drain during dishwashing, but that is different from pouring oil from a pan into the sink.
Know when dish soap will not fix it
Try a plunger or check the P trap if the sink remains slow.
Water backing up into the dishwasher, a sink that will not drain, or a clog that returns soon after clearing can point to a blockage deeper in the plumbing system.
Those signs call for more than dish soap and hot water.
For a sink that has just started slowing after greasy dishes, start with the soap beside the faucet. Give it 5 to 10 minutes, flush with hot water, and see what the drain tells you before reaching for a stronger product.
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