7 Natural Ways Kill Gnats From Sink

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“Gnats,” sometimes known as drain flies, fungus gnats, or fungus flies, have been a nuisance. But how to kill gnats from sink? Let’s check out this article for more details. Your sink drains offer them a haven for breeding grounds, complete with humidity, stagnant water, and even decaying debris.

However, you could see gnats in your trash, decaying organic matter, septic tanks, and swarming fruit. Many people dismiss their presence as a passing annoyance in the spring. They will, however, swiftly spread and can make a living in your house intolerable.

The great news is that you can control these troublesome animals with a few simple pest control strategies. Drain flies, sewer flies, and sink gnats are all names for the same little sink flies that may rapidly become a significant nuisance.

How To Identify Gnats?

Several moth flies are called gnats, although they are not all the same. Fruit flies, moths, and phorid flies might be a nuisance in the spring. The color of your pest is the first thing you should look at when identifying it.

Drain flies can be gray, black, or brown. They have six legs and a tiny antenna on top of their heads. Time is of importance for them because of their propensity to reproduce swiftly.

how to kill gnats from sink

Place some packing tape or other adhesive face down over the drain hole in your sink at night to check for these insects.

Gnats will come up to the tape and adhere to it if there are any in your drain. Don’t be disheartened if you don’t capture anything the first night; catching a gnat may take a few evenings.

To ensure they are drain flies and not something else, you may carefully study any bugs you find. You can get rid of them once you’ve identified the type of bug you’re dealing with it.

What Causes Gnats in the Sink? 

They usually appear as a minor infestation near an entrance point, like on the walls near a shower or inside a sink. Drain gnats like sinks and showers that have been left unattended for a lengthy period (such as after a long vacation) or are used seldom (such as in a guest bathroom).

Gnat flies are tiny, measuring about an eighth of an inch long and looking similar to fruit flies. Drain flies are gray or brown in hue, with light-colored wings, and when crushed, they leave behind a powdery material.

Drain gnats are also fuzzy, with hair covering their bodies and wings, giving them a furry look. Their distinctive vein pattern on their wings and their chaotic flying style help to identify them.

If you find flies that fit this description in your kitchen or bathroom, they might be drain flies (but make careful to rule out other possibilities, such as rotten fruit, which could indicate a different pest).

How To Kill Gnats From Sink?

Flushing out your drains can sometimes eradicate both the drain fly larvae and any motivation for drain flies to return. Use these ways to kill gnats in sink: 

1. Boiling Water

It is a terrific, easy way to get started and can be used in conjunction with the other ways indicated below. It won’t be the most powerful, but it’ll get you started, and it could be all you need.

Take a few cups of boiling water and pour it down the drain every day until the flies have disappeared.

Boiling water

Boiling water kills drain flies, larvae, and eggs, and it can also assist clean up minor scum and bacteria buildups. Take the required care to avoid burns, and pouring straight over the drain is not recommended.

2. White Vinegar, Salt, and Baking Soda

This approach will not only get rid of the drain flies in your sink, but it will also clean your drains and pipes. Take 1/2 cup baking soda and 1 cup of white vinegar. Pour the baking soda down the sink first. Then gradually add the cup of vinegar and cup of salt.

white vinegar, salt, baking soda

The components should begin to bubble and fizz, and they may even emerge out the pipe. Allow an hour for the solution to rest in the drain. Pour a bowl of boiling water down the drain after that.

The fizzing and bubbling of the vinegar and baking soda destroys any flies, eggs, and larvae lurking inside the drain while freeing any organic debris accumulated in your drain and pipes. The boiling water effectively flushes all of the debris down the drain.

You may also put these components in a spray bottle and use them to eliminate other bugs around the house. This remedy will eliminate moths, ants, roaches, and various other creepy crawlies, so you won’t have to worry about them anymore.

3. Apple Cider Vinegar Trap

It is a timeless, classic solution. Pour about six ounces of apple cider vinegar into a cup or small basin. Combine the ACV with a few drops of liquid dish soap (about two tablespoons should be enough) and stir well.

To sweeten the offer for your curious home visitors, add a couple of tablespoons of sugar to the mix.

Apple cider vinegar

Cover with plastic wrap, locking it in place with a rubber band to seal the edges. With a toothpick, poke a few holes in the top – the holes should be just big enough for the drain flies to get in. This apple cider vinegar trap is also effective against other gnats and fruit flies.

4. House Plants

Drain flies are kept at bay by various herbs and tiny house plants. They despise the odor and will reconsider opening up shop! Basil, mint, lavender, and marigold are a few of these plants.

You may put them in pots near windows or anywhere else where they’ll get enough light. Drain flies are less likely to return if these plants are kept alive throughout the year.

5. Tape on the Drain

It is a simple trap that can also help you find the source of your annoying drain flies. Cover your drain with duct tape or similar tape, and the drain flies will become trapped on the tape.

You can leave the tape on for several days if necessary, but never tape active drains that are needed to drain and prevent floods!

6. Essential Oils

Drain gnats despise essential oils, although many of them are helpful to our health and well-being. Spray a few drops of essential oil around the house to keep drain flies at bay. Lavender, eucalyptus, lemongrass, and peppermint are their least favorite scents.

Essential oils

7. Chemical Sprays and Repellents

Many common pest control treatments, may kill gnats in the sink when the pests are included on the label. Because many of these include caustic chemicals, consider keeping them out of the kitchen and wary of drain damage.

  • Natural Armour: This gel-based drain cleaner is excellent for clogged drains that need a giant cleaner to collect different nests or insects.
  • Green Gobbler: This famous fly killer may be poured down drains, septic systems, and even garbage disposals without harming them.
  • American BioSystems: This is a radical alternative for removing germs from drains, especially when dealing with a drain fly infestation. It is often advised for commercial drains.

Are gnat flies always in sink drains?

Certainly not! Gnat flies have infested your home, yet there are no drains nearby? Something wet or perhaps mildewy might be attracting them. Look for clues as to where the sewer gnats are coming from.

Also, clean all of the nooks and crannies throughout your house, such as the back corners of countertops, baseboards, window sills, behind air vents, on top of your refrigerator, and anywhere else that seems suitable.

Gnat Flies: Are They Dangerous?

No! Gnat flies do not bite or sting humans, and they do not carry illnesses. However, because they live in filthy environments, they can transfer bacteria to surfaces and any exposed food items out in the open.

Bottom Line

Ensure you have the correct home goods and supplies when you need them now that you know how to get rid of gnat flies in an environmentally friendly method.

If you’re looking for zero-waste necessities, look no further than our natural, sustainably made cleansers and other home supplies.

While potent pesticides may require more severe occurrences of drain fly infestations, vinegar, aromatic oils, and even houseplants can suffice in most situations. An eco-friendly lifestyle is good for the world, suitable for your house, and excellent for your pocketbook. 

About the author

A biotechnologist by profession and a passionate pest researcher. I have been one of those people who used to run away from cockroaches and rats due to their pesky features, but then we all get that turn in life when we have to face something.