How to unclog a drain without chemicals
Why chemical drain cleaners damage pipes, and the cheap natural method that actually works.
Riley Brand
February 27, 2026
The recipe
Pour 1 cup of boiling water down the drain. Wait a minute.
Pour 1/2 cup baking soda. Then 1 cup white vinegar. It will foam — that's normal. Cover the drain with a small plate to keep the reaction in the pipe.
Wait 15 minutes. Pour another 2 cups of boiling water. The clog should be cleared.
Why this works
Boiling water alone melts grease — the most common kitchen-drain clog. Baking soda and vinegar produce carbon dioxide, which agitates and breaks up the clog.
It's not a chemical reaction strong enough to dissolve hair (use a snake or removal tool for that), but it's strong enough for soap, grease, and food residue.
When to escalate
If the drain is fully blocked (water doesn't move at all), this method won't help. Use a drain snake — $5 plastic version from any hardware store.
If the snake doesn't work, it's a deeper clog. Time to call a plumber rather than escalating to caustic chemicals that may damage your pipes.
People also ask
Why not Drano?+
Caustic drain cleaners damage older pipes and dissolve seals over time. Often makes follow-up plumbing repairs harder.
Can I use this on toilets?+
No — toilets have different angles and a stuck clog needs a plunger or auger.
How often should I do preventive maintenance?+
Boiling water once a week down kitchen sinks. Almost no maintenance needed if you do that.