How Can I Fix a Slow Shower Drain Using Baking Soda and Vinegar?

You can clear a slow shower drain with baking soda and vinegar by flushing with hot water, adding baking soda, then vinegar to fizz, waiting, and rinsing with more hot water. Most slow drains come from hair and soap scum in the trap, and this gentle method avoids harsh chemicals. A quick tech cue: if the fizzing stops immediately, the clog is dense or there’s standing water blocking reaction. We routinely service Massachusetts homes and often see this in older tubs around Lexington where buildup hardens over time.

Try these steps:

• Pull the stopper and remove visible hair first.
• Pour hot water, then 1/2 cup baking soda, then 1 cup white vinegar; cover the drain for 10–15 minutes; finish with 1–2 kettles of hot water.
• Repeat once if flow improves; avoid mixing with bleach or chemical cleaners.
• If the drain is still slow or backs up into other fixtures, it’s time for professional snaking or hydro-jetting with a camera inspection.

Do not use strong chemical drain cleaners in older plumbing, as they can damage pipes.

Updated: 2026-04-06

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