How To Clean Hole In Bathroom Sink

How To Clean Hole In Bathroom Sink
  • Author: Amanda Arnold
  • Posted On: March 24, 2022
  • Updated On: September 19, 2023

Have you ever given the back of your bathroom sink a thorough examination? If you have, you’ve probably seen a small hole under the faucet, usually found near the back of the bowl. Many people don’t think about this little hole, also known as an overflow hole.

You can clean your sink with specific attention to the build-up in your drain, mold in your faucet, and stains on the sink top. Every inch of your bathroom has been scrubbed and deodorized. Your bathroom may be spotless on the inside and out, but you could be overlooking an important element found in every sink: the overflow hole.

We’ll look at how to clean the sink overflow hole in your bathroom in this article.

Is It Essential To Clean Bathroom Sink Hole?

The overflow hole on the bathroom sink isn’t just for show. It serves an important purpose, and a clogged overflow hole is a quick way to a nasty disaster. It must be kept clean and free of any muck or accumulation to function properly. An overflow hole in your bathroom sink is required for various reasons.

There is a suction effect when there is a lot of water covering the sink opening, and no air can get through. As a result, water goes slowly down the drain. Overflow also aids in the speedier draining of the sink. The overflow hole allows air to flow into the drainpipe via the overflow channel, allowing the water to drain considerably more quickly.

It will overflow eventually if you close the sink drain and leave the water running or if you have plumbing problems. There’s a strong probability your bathroom won’t flood as long as there’s no dirt or mold in the overflow drain.

Ways To Clean Bathroom Sink Hole

It is critical to keep the overflow in your sink clear; otherwise, it will not function properly. It would help if you kept it clean because bathrooms are hot and humid environments, and you don’t want mold or mildew to form in the overflow drain hole of your bathroom sink.

Clogged overflows can clog drains and seem unsightly in a clean bathroom sink. It will also stink if mildew grows in your clogged overflow. It’s a good thing the sink overflows are easy to maintain clean and odor-free. Here are some tips for keeping the overflow hole on your bathroom sink clean.

1) Use Hot Water

This procedure will help you clear the overflow hole. Using hot boiling water to unclog the sink overflow and eliminate the stinky odor. Motionless water in the drain might be flushed out by pouring hot water through the overflow hole.

On the other hand, Molds and germs will be unable to survive at such a high temperature. As a result, the sink will not emit any unpleasant odors.

Apart from making sure the hole is clear, you should also make sure it is clean because your bathroom is a wet and hot environment, and you don’t want to discover mold or mildew developing in the sink overflow.

2) Use An Overflow Cleaning Brush

When the overflow drain isn’t cleaned regularly, gunk can build up in the overflow drain and even the hole itself. This accumulation can obstruct air and water flow, but a simple cleaning brush can remove any dirt in the overflow hole.

A little cleaning brush with numerous bristles is very useful to release as much dirt as possible. The bristles will also assist in removing any trapped debris that may be obstructing the overflowing sink. You can also use a zip tie if you don’t have an overflow cleaning brush.

The main reason to use a zip tie is that you can bend it easily according to the size and curve of the bathroom sinkhole. In this way, it would be easier for you to clean the hole without any difficulty.

3) Get Rid Of Smell With An Enzyme Cleaner

Unwanted bacteria can grow in clogged drains if left unattended for too long, resulting in a foul odor in your bathroom. Enzyme cleaners are required to keep the sink overflow hole spotless. These enzymes consume organic bacteria, assisting in removing the foul odor from the overflow drain.

Liquid and powder enzyme eaters are available. Powder enzyme cleaners have a longer shelf life and are more effective after being stored for a longer period.

4) Make An Organic Cleaner Yourself

An odor from an unclean overflow hole can make you sick. In some situations, simply utilizing hot water may not be sufficient. As a result, using chemicals to get rid of the odor is recommended. You won’t need to go to the store for this; instead, your kitchen will suffice. Reach inside your drawers for equal cups of baking soda and vinegar.

Unclog the overflow hole using a snake tool, then use a funnel or silicone mold to add baking soda and vinegar, allowing the solution to settle for 15-20 minutes.

Using hot water, rinse the solution. Be careful when draining boiling water through a porcelain sink since it may break. As a result, instead of pouring the entire amount of water at once, pour it in stages. That’s how you can use baking soda and vinegar for sink cleaning.


It’s either the drain or the overflow hole causing the smell in your bathroom sink. If you discover that the overflow is the issue, you’ll see filth and trapped debris build-up. Not to mention the possibility that a kingdom of germs already resides there.

Fortunately, the clog of filth and stench in your bathroom sink overflow hole is simple to remove with most household items. While wiping down surfaces regularly is sufficient for ordinary cleaning.

It is advisable to schedule a routine cleaning with a professional for a comprehensive top to bottom cleaning of your bathroom, sink, and drains, which will make your fixtures feel brand new.

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Author: Amanda Arnold

Amanda has been working with ConstructionHow since 2021. Her experience spans over 5 years in the creative niche such as home decor and trends, landscaping, renovations, and custom architectural values. As a home designer expert, she has a keen eye for the latest home improvement trends with accurate facts that readers find impossible to ignore. Being invested in home-building trends is how she has gained her lucrative expertise exploring more to bring a positive ambiance for all homeowners (and even tenants!). Currently, she lives in a beautiful beach home, a source of fascination for her.