He poured a cup of vinegar straight after the baking soda. For a second, nothing happened. Then the drain began to fizz — softly at first, then violently. A white, foamy column bubbled up from the hole like a science fair volcano. It hissed and popped, breaking down the greasy scum and loosening the hair and soap trapped somewhere deep in the pipes.
He remembered an old tip from his grandmother: Vinegar and baking soda. Not for cookies — for pipes. unclog sink with vinegar
“Step two,” he said, uncapping the vinegar. He poured a cup of vinegar straight after the baking soda