4) Boiling water
It may seem trivial, but boiling water can be an effective solution for clearing drains. In particular, if it is
the kitchen sink to be unclogged, boiling water will most likely be sufficient to dissolve greasy food
residues. For more stubborn clogs you can add 4 tablespoons of baking soda before pouring in the
boiling water and let it sit for about 30 minutes.
