Plumbing Acid [best] -

It came from the pipes inside the wall. A heavy, dull impact. Then another. Thump.

Elias looked at his watch. Ten minutes. He just needed to flush it with hot water. That was the protocol. Hot water to wash away the corpses of the hair and the grease. plumbing acid

Mixing acid with other cleaners (especially bleach or alkaline cleaners) can produce lethal chlorine gas or cause the solution to erupt out of the drain. It came from the pipes inside the wall

Unlike enzymatic or caustic (lye-based) cleaners, acid cleaners work through two mechanisms: plumbing acid

For 90% of household clogs, a drain snake or a call to a plumber is safer, more effective, and cheaper than repairing acid-damaged pipes or paying an emergency room bill.