How to Unclog a Drain: 5 Methods That Work

A clogged drain is one of those annoying home problems that usually hits at the worst time. The good news: you can often fix it yourself without calling a plumber. Here's how to unclog a drain using methods that actually work, plus what to do when a clog is too stubborn to handle alone.

Start With Boiling Water

The simplest approach is often the best. Boiling water alone can dissolve soap buildup, grease, and other debris that's slowing your drain.

Fill a large pot with water and bring it to a rolling boil. Pour it slowly down the drain in one steady stream. Wait a few minutes and run hot tap water to see if the clog has cleared.

This works best for kitchen sinks where grease is the main culprit. For bathroom drains clogged with hair and soap scum, you'll likely need to move to the next step.

The Baking Soda and Vinegar Method

This natural solution is safe, cheap, and surprisingly effective for most clogs. You probably have both ingredients in your kitchen right now.

Start by removing any standing water from the drain if you can. Pour one cup of baking soda directly down the drain. Follow it immediately with one cup of white vinegar. You'll see fizzing and bubbling, which is exactly what you want. The chemical reaction helps break up the clog.

Cover the drain right away with a plug or a wet cloth. This keeps the reaction from escaping up into the sink and maximizes the cleaning power inside the pipe. Leave it covered for 15 to 30 minutes.

After waiting, pour a kettle of boiling water down the drain to flush everything out. Run hot water for a full minute to clear the pipes completely.

Use a Plunger for Tougher Clogs

A good plunger is one of the most reliable drain-unclogging tools you can own. Make sure you have enough water in the sink to cover the plunger cup completely.

Place the plunger over the drain and pump vigorously for 20 seconds. The up-and-down motion creates pressure that can dislodge the blockage. Repeat this 5 to 10 times.

Check if water drains. If it's moving faster but not fully clear, repeat the plunging sequence two or three more times. For double sinks, make sure to block the other drain with a wet cloth so the pressure doesn't escape.

Remove Hair and Debris With a Drain Tool

If the clog is caused by hair, a simple wire or plastic tool designed for this purpose can pull it right out. These tools are inexpensive and work surprisingly well.

Look for a drain cleaning tool or hair removal tool at any hardware store. Insert it into the drain and twist or push it down to catch hair and debris. Pull it back up slowly and carefully. You'll often see a surprising amount of tangled hair and gunk come out with it.

This method is especially useful for shower and bathroom sink clogs, where hair is usually the main problem. After removing the visible clog, run hot water down the drain to clear any remaining buildup.

Try a Drain Snake for Deep Blockages

A plumbing snake, also called an auger, is a long, flexible cable that can reach clogs deeper in your pipes. You can rent or buy one for a reasonable price at most hardware stores.

Feed the snake into the drain and push it forward slowly. When you feel resistance, you've likely hit the clog. Rotate the handle to break up the blockage or catch it so you can pull it back out.

This tool takes a bit of practice, but it's much cheaper than calling a plumber for a routine clog. Watch a how-to video before you start so you understand the motion and don't damage your pipes.

When to Call a Licensed Plumber

Some clogs are beyond the scope of DIY methods. If you've tried boiling water, baking soda and vinegar, plunging, and a snake without success, it's time to call a professional.

Signs that you need a plumber include multiple drains backing up at once (a sign of a main line clog), sewage smell coming from drains, or clogs that return within days of clearing them. These issues point to problems deeper in your plumbing system that require professional equipment and expertise.

A licensed plumber can use a camera to see exactly what's blocking your pipes and recommend the right fix, whether that's removing tree roots, breaking up mineral deposits, or replacing damaged pipe sections.

Prevent Future Clogs

The best drain clog is one that never happens. A few simple habits can save you time and money.

• Use drain screens or strainers in all your sinks and tubs to catch hair, food, and debris before they enter the pipes.
• Don't pour grease down the kitchen sink. Let it cool, solidify, and throw it in the trash instead.
• Clean out drain screens and traps weekly to remove buildup before it becomes a serious clog.
• Run hot water down your drains weekly as a maintenance step to keep pipes clear.
• Avoid flushing anything except toilet paper and human waste down the toilet, even if products claim to be flushable.