Caustic Soda Down Drain [ Confirmed - 2024 ]

The reaction continued all night. Sodium hydroxide doesn’t stop at grease. It attacks cellulose, turning wood into a brown, brittle mush. It reacts with aluminum, which the old wiring in the basement had in abundance. It seeps into concrete, causing it to spall and crack.

It started as a slow gurgle in the basement utility sink, a wet, choking sound like a sick animal. Within a week, the kitchen drain would only swallow water at a glacial pace. The smell was the worst part—a sour, organic rot that bloomed from the darkness of the pipes. It was the smell of old food, congealed grease, and something else, something older and more patient. caustic soda down drain

A fine, invisible mist filled the crawlspace beneath the kitchen, settling on the wooden joists, the fiberglass insulation, the cardboard boxes of Christmas ornaments. Clara, upstairs, heard only a faint hiss, which she mistook for the sound of success. She rinsed the sink with water, as instructed, and went to bed. The reaction continued all night

Clara woke to the smell. Not the rotten smell of the clog, but something sharper. Alkaline. It smelled like bleach and pain and hot metal. She walked to the kitchen in her bare feet. The linoleum was warm. Unnaturally warm. As she stepped onto the section above the leak, the floor gave way like a rotten log. It reacts with aluminum, which the old wiring

Her foot plunged through up to her ankle. She yanked it back, skinning her shin. The hole she’d made wept a thin, milky fluid that sizzled against the remaining linoleum. She looked down into the darkness and saw her basement ceiling glistening, wet and necrotic, like the inside of a gangrenous wound.

Down in the basement, the heartbeat of the house changed. The rhythmic thrum became a frantic, shuddering pulse. A hairline fracture in the horizontal run of the main drain—a flaw that had been there since the house was built in 1962—opened like a mouth. The caustic solution, still hot and aggressive, found the gap.