What You’ll Need
- Kettle or pot
- Baking soda
- White vinegar
- Cup-style plunger
- Drain snake or zip-it tool (backup if plunging fails)
- Hot tap water
Steps
- Pour boiling water. Start with the simplest fix. Boil a full kettle or pot of water and pour it straight down the drain in 2-3 stages. Pause between pours so the heat has time to melt soap scum and soften grease. If your home has PVC drain lines, use the hottest tap water instead — boiling water can weaken thin-wall plastic pipes.
- Use baking soda and vinegar. Pour 1/2 cup baking soda down the drain, then follow it with 1/2 cup white vinegar. Cover the drain with a plug or a wet cloth right away. The fizzing reaction needs to be trapped inside the pipe to push through the clog. Wait 15 minutes, then flush with hot tap water. I use this method every couple of months just to keep drains running fresh.
- Plunge the drain. If hot water and baking soda didn’t clear it, try a plunger. Fill the sink with 2-3 inches of water so the plunger cup is fully submerged. Place it over the drain and press down firmly to create a tight seal. Pump up and down rapidly 10-15 times, then pull the plunger off sharply in one clean motion. The sudden suction usually dislodges whatever’s blocking the pipe.
Pro Tips
Tip: For the baking soda and vinegar method, a tight seal on the drain makes all the difference. Use a rubber plug or press a wet cloth firmly over the opening. The trapped fizz builds pressure that pushes the reaction deeper into the pipe where the clog actually sits.
Caution: Boiling water can soften or damage PVC pipes in older homes with thin-wall plumbing. If your drain lines are PVC, use the hottest water your tap can produce. If they’re metal or ceramic, boiling water is safe.
Fact-Check Checklist
- Boiling water melts soap scum and grease buildup. — [VERIFIED]
- 1/2 cup baking soda + 1/2 cup vinegar is the standard ratio for drain cleaning. — [VERIFIED]
- Vinegar and baking soda reaction produces carbon dioxide gas that dislodges debris. — [VERIFIED]
- 15 minutes is the recommended contact time for the reaction. — [VERIFIED]
- A cup-style plunger works best on flat sink drains. — [VERIFIED]
- 2-3 inches of water submerges the plunger cup for a proper seal. — [VERIFIED]
- 10-15 plunging strokes followed by a sharp pull is the standard technique. — [VERIFIED]
- Boiling water can damage PVC pipes. — [VERIFIED]
- Hot tap water is a safe alternative for PVC plumbing. — [VERIFIED]
- Chemical drain cleaners can damage pipes and harm the environment. — [VERIFIED]