sink drain unclogged with clear water running freely

6 Ways to Unclog a Drain Without Using Caustic Chemicals

A plugged-up sink, shower, or tub drain sends most people running for either a bottle of caustic drain cleaner or a plumber’s phone number. But wait. Unclogging a drain could be a job you can do yourself successfully without caustic chemicals or a big bill.

sink drain unclogged with clear water running freely

You have several options, each one outlined below. It makes sense to start with the easiest, most likely solution. Then, if that doesn’t work, move to the next option.

Assess the situation

Turn on taps to allow water down other drains in the house. If everything else is flowing freely, you can be fairly certain you have a localized clog—and probably near that clogged drain’s opening.

If this involves other drains, you could have a bigger problem that may require a professional. Assuming it’s only one drain, let’s move on.

1. Boiling water

It makes sense to start with the cheapest option: Get a large pot and boil up as much water as it will hold. Now carefully and slowly, pour boiling water down the drain in two to three stages so that the hot water can work for a few minutes between each pour. This is the easiest and quickest way to unclog a drain if it works, which usually it does with a satisfying swoosh.

Caution: If you are dealing with a very old, antique porcelain sink and/or PVC pipes, there’s a slight chance that boiling water could cause damage. In this case, fill the pot with your hottest tap water.

Still not running freely? Let’s move to the next option.

2. Blue Dawn plus boiling water

Pour 1/2 cup of Blue Dawn detergent (no substitutes for best result) into the drain. For tough clogs, use a full cup. While that sits, bring a half pot of water (about 4 cups) to boil. Pour this directly into the drain very slowly but steadily to avoid getting burned by splashing water. Allow to sit for 10 to 15 minutes, then run water down the drain to check how freely water flows.

If the clog remains or seems to be clearing, but the drain is still slow-running, repeat the boiling water step above until the drain runs free.

3. Baking soda, vinegar plus boiling water

Measure out 1/3 cup baking soda and get as much of it down the drain as you can. Follow with 1/3 cup white vinegar. It will fizz up and make quite a show. Allow it to sit for at least an hour, or overnight if possible. In the morning, follow with one or two quarts of boiling water.

You will be tempted to overdo it with the baking soda and vinegar assuming that if a small amount is good, more is better. Learn here why that might be a bad idea, and to get a good chuckle.

4. Reach in

Remove the strainer that is part of the drain plug, then reach into the drain with your fingers (latex gloves would be a good idea here) and pull out any solids. As gross as this might be, it is often all that’s needed to clear a slow-moving or clogged drain. If this sink has a pop-up, reaching in may not be possible. In that case, move to the next option.

5. Drain Snake

If you cannot reach the clog with your fingers, your next best friend is this cheap plastic tool called a drain snake for drain rooter. These come in various brand names such as Zip-It, available at some home improvement centers or online.

Instead of paying $8 or more, look for Drain Rooter Plastic Drain Snake at most dollar stores for $1.25. Check your local DollarTree for the tool pictured, which as I write is $1.25. You can order online from  but keep in mind that with an online order you will have to pay for a pack of 24.

This simple tool is flexible enough to allow you to push it down into the turns of the drain. It has teeth along each side; once you’re in and twist it, you’ll be able to pull out all drain offenders. Keep working at it, until you pull out as much as possible. Now run the hot water and that should clear things up nicely.

The drain snake can be used in a sink drain with or without a pop-up, because it is thin enough to fit in the drain along side a pop-up.

This handy dandy tool is worth its weight in gold. It’s great to clear drains but also works well to maintain drains before they get clogged.

Fast and easy, no expensive plumber required. Made in the USA.

6. Wet-dry vacuum

If you have a wet-dry vacuum, it just might help you to clear the drain without having to get your hands dirty. First, set it to “wet” so it vacuums liquids. Cover or close the drain’s vent. Make the tightest seal you can with the hose end of the vacuum over the drain.

Get creative with duct tape or the like. With the vacuum set to its most powerful setting, it can be powerful enough to pull that clog right out of the drain. Don’t forget to clean the vacuum tank!

No guarantees

While I offer no guarantees because not all clogged drains are created equal, attempting to clear a clogged drain yourself (before spending money or just living with it until you have a major disaster) is worth a shot. The worst thing is that you will still have a clogged drain.

I can’t tell you the number of times I’ve successfully cleared a stubborn clogged drain—especially in a bathroom sink or shower—by first using my trusty Zip-It, followed by the Blue Dawn and boiling water trick. Seriously awesome!


First published: 1-29-19; Updated and republished 2-7-24


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26 replies
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  1. Kathy C says:

    Thanks so much for the recipes, Mary. I had an issue in the kitchen. When I used the garbage disposal (and I rarely put anything down there) the other sink backed up. GROSS. I went through your suggestions above in order, and the 3rd one was a charm. Totally cleared out the issue. Thank you!!!

  2. Barbara J Pire says:

    Mary thanks to you a couple of years ago my toilet got clogged and I ran to the kitchen and grabbed my bit bottle of Dawn and poured it in and voila!! It flushed on it’s own!! Thank you for the greatest tips!! xxoo

  3. Caye Cooper says:

    All these ideas sound great. I’ve made a copy and have posted it on the inside of the door under the counter.
    One problem I have is that a small lighted candle which was left uncontained, melted. I have older plumbing so I’m wondering if very hot water treatments might melt the wax. Any suggestions?

  4. JC says:

    Im 77 years old and always looking for ways to clean. I tried the baking soda and vinegar method for my kitchen sinks. At first I didn’t seem to have much success. Then I shoved the plastic cleaning tool down the drain and bingo it opened the drain right up. I also used it in my shower drain and it fixed that also. Thanks for all your help,

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