Plumbers Acid ((better)) -

| Problem | Safe Alternative | | :--- | :--- | | Hair/grease clog | or drain snake (a $15 manual tool). | | Slow drain | Enzymatic cleaner (uses bacteria to eat organic waste). | | Tough clog | Baking soda + vinegar (followed by boiling water). | | Calcium scale | Citric acid (much milder than sulfuric). |

When in doubt, call a licensed plumber—and tell them if you have already poured acid down the drain. plumbers acid