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Tiny black, gnat like bugs infesting concrete walls outside

Use Vinegar Solution

But there is an easier way to get rid of gnats from the bathroom sink.

Pouring boiling vinegar down the sink will get rid of gnat infestations.

You should simply boil apple cider vinegar in a pot and then pour the hot liquid into the sink.

This will effectively get rid of a gnat infestation in your bathroom.


How Do Gnat Infestations Start?

Typically, gnats will enter your house from the outdoors through cracks or holes in your foundation, walls, windows, or doors. Gnats often infest trash cans, rotten fruit, and other moist places where decomposing organic matter exists. They can also be found near sinks, drains, and toilets.

How to Get Rid Of Gnats Outside

Getting rid of gnats outside is more complicated than you initially thought because as a rule you would find no signs of regular invasion. Their attacks are largely dependent on climate and in the availability of any damp gnat breeding sites in the neighborhood, such as ponds and marshes, forests, farms, organic waste dumps.

The first step to take is to eliminate favorable gnat breeding conditions (to prevent them from laying eggs).

This is the most essential initial measure to be taken, since mosquitoes cannot breed without moisture. Being in swampy woods, you will not be able control the gnat population, but once they fly on your site, take the following measures to prevent them from laying eggs:

  • Drain standing water pockets if possible;
  • Eliminate mold, should there be any
  • Drain overwatered soil (especially if it is sandy)
  • If you have cattle farm buildings, take out the manure more often, as the gnats will always breed near fertilizer
  • Get rid of decaying organic matter, keep your trash cans away from the house

Gnats do not fly very well, that’s why they would rarely leave the spot where they breed. After you have done everything possible to eliminate the favorable gnat environment, proceed directly to getting rid of them.

Things to consider and correct in your bathroom

  • Check around the bath tub or underneath it to see whether any water is stagnating or that area is damp, if so that is the best and optimum place for the gnats to breed and multiply.
  • Check your shower curtains, if they are wet all day and not used while bathing for few days then there is a chance that gnats may grow in those curtains
  • Gnats are usually attracted to tooth paste and tooth brush. Make sure you put your tooth brush and tooth paste in a Ziploc bag not letting any flies or gnats to enter in it.

5 Things to get rid of gnats in bathroom easily

The below 5 products will help you to get rid of gnats in your bathroom.

Mosquito & Gnat Barrier Covers 5,000 Square Feet

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How to Prevent Gnat Infestations

Once you have treated your gnat infestation, there are a few tips to help prevent a future infestation.

  1. Clean up food and drinks after meals—Don’t allow food or drinks to sit out after meals and clean up any food or drink spillages shortly after they happen.
  2. Take out your trash every night and use a sealed trash can—Gnats are often attracted to items in the trash. By taking out your trash nightly and using a sealed trash can, gnats will be less likely to enter your home and gather around your trash.
  3. Water plants with less frequency—Only water your indoor plants when necessary. If you overwater your plants, gnats may use the area for moisture and to lay eggs.
  4. Put fruit in your refrigerator—Because gnats are attracted to the smell of fruit, leaving fruit exposed on your counters can attract gnats. Place your fruit in the refrigerator instead of leaving them out.
  5. Remove moisture inside and outside your home—Homeowners should repair plumbing leaks and sink stoppages and remove moisture accumulation from rain gutters and birdbaths.

Tape it up

It may not be the best-looking solution, but fly tape can work wonders in a bathroom infested by gnats.

Lifehacker.com recommends stopping drain flies at the source by placing a piece of tape flue-side-down to block the drainpipe overnight.

In the morning, just slowly remove the tape to look at the number of captured flies.

This may help ameliorate a light infestation, but it can also indicate if you have a bigger problem. Use the tape method for several nights to assess the situation.

If the tape is covered every night and drain flies are still found regularly in your bathroom, then you may need a professional exterminator.

How Can I Get Rid of Gnats in the Bathroom?

If you find that you have a gnat problem in your bathroom, there are several effective ways of getting rid of gnats with simple home remedies using everyday products you probably already have in your home. An effective way to deal with gnats and fruit flies in your house is by constructing a vinegar trap.

This takes nothing more than a small container, filled halfway with apple cider vinegar and a few drops of dish soap. Cover the opening with plastic wrap, and pierce a few holes in the top. This will allow the gnats to get into the trap but not to get back out.

Can Baking Soda Kill Gnats?

Use this easy recipe to eliminate gnats in all your bathrooms.

tb1234 1 cup baking sodaHot water tb1234

Create a thick paste of baking soda and hot water by mixing the ingredients. Apply the baking soda paste to the inside of your bathtub to create a thick layer. Allow the baking soda to stand for five minutes.

When the paste begins to dry, scrub the sides with a nylon brush, then rinse with hot water. The paste should help to get rid of any gnat eggs that might be attached to the surface of the tub.

Eliminate their food source

Fruit flies won’t stick around if they don’t have anything to feast on. For the time being, stick produce in the fridge or inside bins as much as possible. You should also rinse fruits and veggies as soon as you get home from the store. “There may be some eggs or very, very tiny larvae,” Orkin entomologist Chelle Hartzer says. “By washing them and storing them sealed up, fruit flies can’t find that food source anymore.”

It’s not so simple for drain flies. Since they prefer bacteria, sewage, and gunk in your drain, garbage disposal, or seldom-used toilet, Hartzer advises using a drain cleaner like Drano Max Gel Clog Remover to flush out the pipes. If the problem persists, an ongoing infestation may indicate a leak, so call a plumber.

As for fungus gnats, exercise your green thumb. These pests love humidity and moisture, so ease up on the watering. Repotting houseplants in new soil also helps. “It’s great for the plant and it’s great to reduce gnats,” Hartzer explains.

Why Are Gnats in My Bedroom?

Like most household insects, gnats often get into houses searching for food and conducive environments to procreate. Let us take a look at the factors that can make these bugs thrive.


Besides food, moisture is probably the biggest gnat-attracting element. Moist conditions in your bedroom can result from the presence of overwatered plants, damp clothes, garbage cans, condensation around windows, and leaky plumbing. If you have any of these, the resulting moisture could be what is attracting the tiny critters into your bedroom.

Vegetables and Fruits

Most insects get into houses in search of food, and gnats are no exception. If you leave fruits and vegetables in the open, their scents are bound to attract these insects. This gets worse if some of the fruits or vegetables are rotten. Remember that half-eaten apple you left on your dressing mirror? Well, it is the source of your bedroom gnat problem. If you have any ripe fruits in the bedroom, it is good to keep them in airtight containers where the outgoing scent is minimized. Not only will this reduce your gnat problem, but you will also prevent other insects such as ants from getting into your bedroom.

Human Odors

Tears, mucus, body heat, sweat, and carbon dioxide exhaled by a human being can all attract gnats. Additionally, these insects also love the sweet-smelling detergents, hairsprays, lotions, and perfumes we use regularly. In particular, avoid fragrances with fruity nuances if you have a gnat problem.

Well-lit Environments

This does not mean that you should keep your bedroom dark since it will only result in additional problems. However, make sure to switch off lights that are not being used since gnats like flying in well-lit environments. They are not very fond of the dark.

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Bathroom toilet

If gnats are congregating around your bathroom toilet, the trouble is likely the drain. It could either have a leak, is broken because of age, or flies are attracted to the matter accumulating it in.

It could be human waste, but it also could be something else. People often use bathroom toilet drains to dispose of items that should not be flushed, items including certain paper items, animal waste, clothing, or food and beverages.

The problem in your toilet may involve larva. In that case, you should remove any buildup inside your toilet or the standing water, according to goodbyedrainflies.com.

While flies and gnats are less commonly found in toilets, they could be entering your bathroom through a faulty seal between the toilet and a sewer flange, Goodbye Drain Flies adds.

The website recommends removing scum building up to prevent gnat issues. If you’ve been using the boiled water method or a drain gel, that could take care of it, but it could not be enough.

Goodbye Drain flies notes that your toilet piping is more complex than the typical bathroom or shower sink drain. There could be a break in your sewer line.

Sewer line breaks are caused by any of the following: shifting soil, root infiltration, shifting soil, grease buildup, and debris. If you think you have a mainline break or crack, call a plumber.

Gnats in the Bathroom or Toilet

You are most likely dealing with sewer gnats or drain flies if they mostly appear from the bathroom or any part of the house that has drainage pipe openings. Here are the removal methods we suggest for these types of gnats.

3. Clean the Bathroom Drains

The dirty debris that accumulates in the bathroom drains is the perfect breeding ground for sewer flies and drain gnats. We suggest using drain treatment cleaners such as the Green Gobbler Gel to keep the pipes clean.

4. Dehumidify the Bathroom

This isn’t as easy for houses or apartments that have windowless bathrooms but it’s important to get rid of the excess moisture in the bathroom. This also applies to other parts of the house that has access to water. Moisture is one of few things that gnats are attracted to.

Get yourself a strong dehumidifier and turn it on during days of high humidity or just after you took a shower. Don’t forget to open the windows as well if the bathroom has them.

Baking soda Paste that kills gnat in bathroom

This is a homemade paste that can be done easily at home using baking soda. Things required for are a big bowl, baking soda and water. Put baking soda in the bowl and add less water into it. Mix baking soda and water to a paste consistency without any lumps.

Now your baking soda paste is ready to kill gnats, wear your plastic gloves and apply this baking soda paste in the bathtub as much as to create a thick coating layer.

Let the baking soda coating layer be there for 5 minutes, when you see the paste is getting dry turn on the shower and wash you bath tub with usual rubbing brush. After that turn on hot water to cleanse it properly to remove any residual gnat eggs left.

Do not allow your kids to come near you when you are applying baking soda paste, as it may create allergy to the kids

Natural home remedies to get rid of gnats

1. Vinegar Trap

You will need the following:

  • Apple cider vinegar
  • Sugar
  • Dish soap
  • Water (warm)
  • Small bowl

Mix 2 tablespoons of vinegar, 1 tablespoon sugar and approximately 20 drops dish soap with a couple of cups warm water. Mix well, dissolving everything. Place this gnat-killer liquid where you see the gnats flying around. They will be attracted to the apple cider vinegar smell and drink it. But it will be the soap in the liquid which will trap them and kill them.

2. Ammonia or Bleach

If you have gnats near the bathroom sink, a good homemade method is to just pour some bleach or ammonia down the sink. But DON’T mix the two together, because that will create a horrible poisonous gas. Some people prefer ammonia, just pouring a bottle down the sink. Did you know that gnats can live deep inside the pipes, so flushing ammonia down will kill gnats that lurking there.

3. A jar with apple cider vinegar

The most natural simplest war to get rid of gnats is just simply using a mason jar. Fill it with some apple cider vinegar. Poke quite a few quarter-inch little holes in the jar lid and leave overnight. The gnats will be drawn to the smell and enter the jar but they will not be able to get out.

4. Harmless baking soda

All you do is make paste with baking soda. Apart from that you will need only 2 more things, a bowl and some water.  Place some baking soda in a bowl, adding some water to form a paste. Then apply this paste on your bath tub, allowing it to stand for around 5-10 minutes. After the minutes have passed, wash out your bath tub, using a scrubbing brush with hot water. That will definitely get rid of any eggs of the gnats that remain in your bath room. Do this for your shower and toilet too.

Preventing a Gnat Infestation in the Bathroom

Gnats are attracted to the bathroom due to moisture.

Dampness and moisture along with organic material in the drainpipe create the perfect breeding ground for gnats.

Prevention is more effective in keeping gnats out of the bathroom.

Here are some tips to prevent a gnat infestation in your bathroom.

Keep Bathroom Clean

You will most likely stumble upon gnats around the shower, bathtub, and sink area in the bathroom.

To avoid a gnat infestation, you should keep these areas dry.

Check the area near the bathtub and sink for stagnant water.

You should mop water immediately to avoid giving gnat flies a chance to breed.

Shower curtains should also remain dry. Flies can lay their eggs on the curtains if they remain wet most of the day.

Clean Drains

Dirty drains are one of the main reasons that gnats infest the kitchen.

You should make it a habit to clean the drains at regular intervals. Use baking soda and an ammonia solution to clean the drain pipes each week.

You can also use a metal pipe brush to clean the drains.

The metal pipe brush is available in most hardware stores. Push the metal brush as far as you can inside the pipe. You should move the brush back and forth to remove gunk build-up inside the pipes.

Once you have cleaned the drain, you should pour boiling water down the pipe.

Hot water will flush the organic material down the drain. Removing the food source will prevent gnat fly infestation in the bathroom.

Fix Leaky Pipes

You need to fix any and all leaky pipes to prevent gnat infestation in the bathroom.

Leaks create a puddle of water that creates an ideal breeding spot for flies.

Check the pipes regularly for a leak. You should get the pipes repaired even in case of a tiny leak.

To prevent gnats from thriving in the bathroom, you need to keep the bathroom perfectly dry.

Store Towels in Lidded Hamper

Gnat flies can lay eggs in wet towels. You must store towels in a lidded hamper to prevent female gnats from laying eggs.

In addition, you should keep the curtains and blinds open to let sunlight inside.

Sunlight can dry wet towels thereby preventing a gnat infestation.