A clogged sink can cause frustration if you don't have a commercial drain cleaner on hand. Moreover, drain cleaners can harm the environment, and are often expensive. Instead of purchasing a drain cleaner, you can make your own using common items found around your home.
Dry off the area around the sink drain.
Boil 2 cups of water.
Pour ½ cup of baking soda into the drain.
Add ½ cup of vinegar to the drain.
Pour the boiling water down the drain. If the sink still appears clogged, then use salt and water to help remove grease buildup.
Add ½ cup of salt to 4 liters of cool water.
Stir until the salt dissolves into the water.
Place the solution on the stove top until it begins to steam. Do not bring the solution to a boil.
Pour the salt solution down the drain.
Never pour boiling water down plastic pipes. Instead heat the water and remove it just before it begins to boil. Do not combine vinegar with a commercial drain cleaner; a chemical reaction will produce dangerous fumes.