How to Clean a Sink Overflow

Have you ever noticed a hole under the faucet in a sink before? Do you know its function? That’s an overflow hole that prevents water from spilling on the floor if the sink overflows. That is why it is important to clean a sink overflow hole to keep it draining water.

clean a sink overflow


If the hole gets blocked, it won’t be able to drain excess water and your floor will get flooded. Asides that, if the sink overflow is not clean, it is likely to grow mold, especially if it is in a bathroom.

Today, we will tell you how best to clean a sink overflow and keep it working optimally.

It is also possible that the sink overflow hole might smell due to the accumulation of bacteria causing the clog. We will also tell you ways to deal with that and keep everything nice and neat.


Clean a Sink Overflow Hole of Clogs

  • Insert a cleaning brush in the hole. This Alink brush is a great option. It is long and has a lot of bristles. Work it up and down the hole to loosen as much clog as possible. The bristles will also trap the materials and pull them out along with the brush.
  • Stick a silicone funnel into the hole. This type is ideal as it can withstand high temperatures.
  • Pour hot water into the sink overflow hole. Be careful at this point so it doesn’t splash on you. The boiling water will further release the clog and push through the build-up freeing the overflow hole.
  • Repeat if needed. The clog might not completely loosen the first time you try. In that case, you might have to go over this process a couple more times to have it drain properly again.


How to Clean a Sink Overflow That Smells

Depending on different reasons, the clogged overflow hole might be causing a smell. The previous method will not totally eliminate the smell.

The following approaches will help you clean a sink overflow hole as well as deal with the smell.


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Use baking soda and vinegar

The two ingredients commonly found in homes can make a cleaning agent for sink overflow holes. Just follow the process below to get it done.

  • Pour baking soda down the hole. With the help of a funnel, pour one cup of baking soda into the sink overflow hole.
  • Pour some white vinegar into the hole too. You can try this Natural Armor. It is rated 6x stronger than regular ones and is ecofriendly. Once you pour it, it will fizz in reaction with the baking soda. This effect will loosen and deodorize the overflow hole.
  • Let it sit for a while. Leave it in and let it do its things for about 15 minutes.
  • Pour in boiling water. After the time has passed, pour some hot water into the overflow hole to flush everything out. The heat will also kill most of the remaining bacteria.
  • Repeat as needed. If some smell still lingers, you will have to repeat the process. Depending on how strong it is, you might need 2 more iterations.



Use an enzyme cleaner

Enzyme cleaners are also great to clean a sink overflow hole. They eat through organic bacteria like monsters. Some of them are even fortified with odor neutralizers like this Angry Orange.

Enzyme cleaners often come in liquid and powder forms. The powder will need to be mixed with water first or you first pour it in the drain then flow some water through.

Whichever type you go for, you can rest assured you will get results. All you have to do is pour the enzyme cleaner into the sink overflow hole and let it sit overnight.

The next morning, you can pour in some warm water to flush it all out. In most cases, enzyme cleaners properly deal with both dirt and smell. So, you likely won’t need more than one iteration.

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There you go, easy ways to clean a sink overflow. In most cases, these methods too will work for your drains too. So, feel free to apply them as needed. If you found this information useful, chances are your loved ones will too. Why not share it with them? They will love you for it.

That’s it from us today. If you want more useful tips and reviews, you can explore our site. Questions? Hit us up in the comments. We’ll be happy to help. Thank you for your time.











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