Welcome to the world of .

Just don't drop your phone in the sink while you wait.

Sodium hydroxide (NaOH) doesn't just "clean" your drain. It wages chemical warfare. And if you treat it with respect, it will win. Forget scrubbing. Caustic soda works on a molecular level. When you pour those white, pearl-like pellets down the drain, you are deploying a base with a pH of 14 (for context, bleach is 11, water is 7, battery acid is 1).

Once a month, pour one tablespoon of caustic soda crystals down the drain, followed by a cup of hot water. Let it sit overnight. You will never meet the dragon again.