If you choose to use a caustic drain cleaner, follow these rules strictly:
In older homes with thin copper or galvanized steel pipes, the caustic nature of lye can accelerate corrosion. caustic chemical used in drain cleaners
The heat that melts grease can also warp plastic (PVC) pipes. Older metal pipes are not immune; caustics can react with the metal, leading to oxidation or even pinhole leaks. If a cleaner sits in a trap too long, the "heat of reaction" can build up to the point where the pipe softens or joints fail. If you choose to use a caustic drain
It is a low-cost industrial chemical, making retail drain cleaners affordable. The Hidden Risks to Your Home If a cleaner sits in a trap too
The fumes can irritate the lungs; ensure the bathroom or kitchen fan is on or windows are open. Safer Alternatives
One of the most critical aspects of caustic drain cleaners is the heat they generate. When sodium hydroxide crystals or flakes come into contact with water, they dissolve exothermically, releasing significant thermal energy.