How To Clean Overflow Hole In Kitchen Sink

How To Clean Overflow Hole In Kitchen Sink

You may not have noticed it, but if you look closely at the basin of your bathroom sink, just below the sink, you’ll notice a little hole. This is referred to as a sink overflow. As the name implies, when the drain is blocked by a stopper or clogged with debris, this little hole stops water from flowing out of the basin.

The water is subsequently emptied into the overflow pipe, which connects to the same drain as beneath the sink’s drain hole. The sink overflow also provides this ventilation.

The kitchen sink has to be cleaned and maintained regularly, just like the rest of your home. In that manner, it may continue to vent while also preventing overflow. If you don’t, muck will accumulate at the bottom of the overflow channel, causing water to overflow from your basin.

Here are some of the best ways to clean and maintain your sink overflow so that it can continue to keep water from overflowing even if the drain is clogged.

Use Normal Home Cleaners Instead Of Chemicals

You may be asking what chemical you can use to clean the overflow hole. Because not every chemical is safe, you’ll need to be cautious about what you use.

Anything that can go down other drains will be okay. First and foremost, you should refrain from using bleach. It has a minimal cleaning effect on the drain and many potential issues. So, what are your options?

You can manufacture your own drain cleaner if you don’t have or want to use a commercial drain cleaner. Combine the baking soda and water in a mixing bowl. Allow it to sit for a few minutes after pouring it down the overflow hole. Repeat rinsing with hot water a few times.

White vinegar can also be used. Fill the overflow hole with white vinegar and let it sit for a few minutes. After that, rinse it with warm water.

Clean The Gunk With A Brush

Digging out the gunk is a good way to clean the sink overflow. Okay, this part will most likely make you gag–just grit your teeth and keep reading. To dislodge the gunk and keep the overflow hole from clogging, insert the brush into it and draw it in and out multiple times.

Depending on how much you end up excavating out of the overflow, you may need to rinse the tool between each use.

Use Enzyme-Based Drain Cleaners

Bacteria that accumulate at the bottom of the overflow drain produce foul odors. Boiling water won’t be adequate to eliminate the odor or kill the bacteria because it’s not strong enough. Instead, it would help if you used enzyme eaters, which are designed to devour germs and, as a result, eliminate the stink.

Enzyme drain cleaners are available at home improvement stores, and some are suitable for drains that lead to septic tanks. Some are in powder form and must be combined, while others are in liquid form and consumed on the go. If you follow the appropriate steps, you can make one yourself.

Pour Boiling Water In The Sink

While it’s not a good idea to pour hot water into the sink itself, it’s a good technique to clear out the overflow drain. Investing in a rubber or silicone funnel that directs the water towards the overflow rather than the sink is an excellent way to ensure that the water does not end up in the sink.

Because boiling water is dangerous, you may want or need to seek the assistance of another person when pouring the water into the overflow. You don’t want to get splattered with hot water, jump, lose your grasp on the kettle, and end up with a large mess.

Make A Cleaner Yourself

Get rid of harmful, chemical-laden cleaners. Baking soda and vinegar are experts at cutting through crud and dirt to leave a clean, fresh gloss on your home.

Overflowing sinks may be quite unpleasant, which is where this dynamic duo comes in. Fill the overflow with a good amount of baking soda and then a similar amount of vinegar, using the funnel you used for the previous suggestion.

The reaction between the two substances should remove the muck while reducing the odor. Pour some boiling water down the overflow after you’ve allowed the baking soda and vinegar to soak for a few minutes.

Use A Zip Tie To Clean The Overflow Sink Hole

Plastic zip ties are ideal because they can bend around the curvature of the sink while remaining strong enough to remove any germs or sludge that has accumulated at the bottom of the overflow drain.

Simply insert the pointed end of the knot down the drain as far as possible, then wriggle it up and down and side to side to remove or loosen any build-up it may come across. Instead of a shorter zip tie, use a longer one, as a shorter one could fall into the overflow drain.


Well, there are a lot of easy and natural methods to get rid of an overflow hole in the kitchen sink. So, you don’t need to waste your time and money to get professional cleaning services. However, you can get professional services if you have a high budget and enough time.

Hopefully, discussing guidelines and steps will help clean the overflow sinkhole effortlessly and efficiently. That’s all from our side. Now, it’s your turn to clean your kitchen sinkhole by implementing mentioned instructions.

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