Encyclopedia & FAQ's
DIY Frequently Asked Questions / Chemicals')">
Used to clear stopped-up drains by chemical action.
- Most liquid drain cleaners are heavier than water and will seek out the stoppage, even if the sink, tub or bowl is full of water.
- Cleaners are typically a combination of potassium hydroxide, which turns grease to soft soap, and thioglycolic acid, that dissolves hair. Others may contain sodium hydroxide, sulfuric acid or lye.
- Toxic liquids should carry warnings and must be used with caution.