How to Get Rid of Gnats in Your House: Simple Solutions with Everyday Items

10 minutes

It has happened to all of us at one point or another: those tiny, incessant flying pests known as gnats making an unwelcome appearance in our homes. While their small size might make them seem inconsequential, their persistent presence can quickly become a nuisance. Before diving into solutions, it is vital to understand why these annoying invaders are attracted to specific areas of our homes in the first place. 

Gnats, often mistaken for fruit flies, are attracted to moisture, organic material, and decaying matter. Common household areas such as overwatered plants, fruit bowls, and improperly sealed food containers can be gnat magnets. The warmth and availability of food sources inside homes make them a paradise for these tiny pests. But fear not! By leveraging some common store-bought items and understanding their habits, you can evict these uninvited guests from your living spaces. 

Here, we will explore both the ‘why’ and the ‘how’ of gnat infestations, offering simple and effective remedies to keep your home gnat-free. 

What are Gnats & What are the Different Kinds?  

Gnats are small, winged insects that belong to various species and can be found nearly everywhere in the world. While the term “gnat” is often used colloquially to refer to any small flying insect, it includes several distinct species. These insects are usually characterized by their small size, short lifespan, and propensity to form swarms. Here are the most common types of gnats found in homes: 

  • Fungus Gnats: These gnats are typically found around plants, especially houseplants with overly damp soil. As their name suggests, fungus gnats feed on fungi that grow in damp and decaying organic material. Their larvae can be particularly harmful to young plants and seedlings, as they might feed on the plant’s roots. 
  • Biting Midges (or No-See-Ums): These gnats are known for their painful bite. They are tiny, making it hard to spot them, but their bite is quite noticeable. They are often found near water bodies and can be a significant nuisance during certain seasons. 
  • Gall Gnats: These gnats are known for causing swellings or “galls” on plants where they lay their eggs. The larvae feed on the plant tissues inside these galls. 
  • Drain Flies (or Moth Flies): Although not technically gnats, they are sometimes included in the category due to their small size and similar habitats. They are typically found in bathrooms and kitchens, breeding in the sludge that lines drains. 

Why are Gnats Attracted to Your Home?  

Gnats are more than just tiny nuisances that hover around. Their presence in your home can indicate certain environmental conditions that are particularly appealing to them. Let us dive into some of the main reasons these small flyers find your living space irresistible: 

  • Moisture and Dampness: One of the most significant attractors for gnats is moisture. Overwatered houseplants, leaking pipes, or even a damp sponge left on the kitchen counter can create the perfect breeding ground for these pests. The fungus gnat, a common indoor pest, is particularly drawn to the fungi that grow in moist soil. 
  • Organic Decay: Gnats are also attracted to decaying organic material. Overripe fruits, forgotten leftovers, or even the thin film of residue in your drains can act as a food source for them. This is especially true for fruit flies, a type of gnat that thrives on fermenting fruit. 
  • Food Residues: Leftovers, crumbs, or spills, especially sweet ones, can attract gnats. It is not just food for you; it is food for them too. Even the tiniest residue, if not cleaned properly, can be a feast for these pests. 
  • Garbage: Your trash can, if not sealed or taken out regularly, is a banquet for gnats. The mix of decaying food and other organic material is a haven for them to feed and breed. 
  • Open Windows and Doors: Sometimes, it is as simple as gnats entering through an open window or door, especially during warmer months. They can be attracted to indoor lights or the scent of food coming from your home. 
  • Indoor Plants: While plants add life and vibrancy to your home, some gnats, like the fungus gnat, are specifically attracted to the damp soil of potted plants. 

How do Gnats Get into a Home?  

Gnats, those tiny, persistent flying insects, often infiltrate homes, causing annoyance to its inhabitants. Their entrance can be attributed to several factors: 

Openings: One of the primary ways gnats gain access is through open windows and doors. While it might seem inconceivable due to their minuscule size, even small tears in window or door screens can be enough for gnats to slip through. Ensuring that windows and doors are properly screened and that any existing screens are in good repair can be a crucial preventive measure. 

Houseplants: Another inviting beacon for gnats is the moist environment provided by overwatered houseplants. The damp soil forms an optimal breeding ground for certain gnat species. Some houseplants may also develop a thin layer of algae or mold on the soil’s surface, which can further attract these pests. Therefore, monitoring the watering routines and ensuring that houseplants have proper drainage can help in reducing the appeal. 

Decomposing Organic Matter: Gnats are naturally attracted to decomposing organic material. This means that forgotten fruits and vegetables or even the remnants of food left in sinks can be magnets for these insects. Regular cleaning and proper food storage practices can significantly deter their presence. 

Grocery Produce: Sometimes, the very items we bring into our homes can be the culprits. Gnats can hitch a ride on fruits and vegetables purchased from the store. Giving produce a thorough wash or storing it in the refrigerator can help mitigate this risk. 

Infested Materials: Occasionally, the materials we use in our homes, like potting soil, may already be infested with gnat larvae. It is beneficial to inspect and, if possible, sterilize such materials before introducing them indoors. 

Home Exteriors: Small cracks, gaps, or openings in a home’s facade can serve as gateways for gnats. Regularly inspecting and sealing these potential entry points can prove beneficial in keeping gnats at bay. 

Once inside, homes offer a comfortable environment for gnats, replete with warmth, moisture, and food sources. To prevent their infestation, it is essential to understand these entrance points and address them proactively. 

Effective Solutions: How to Get Rid of Gnats 

If you are battling a gnat infestation inside your home, there are several solutions you can try using common household or store-bought items. Here is a list of strategies to help you combat and repel these annoying invaders: 

Apple Cider Vinegar Trap: 

  • Fill a jar or bowl with apple cider vinegar, adding a drop of dish soap to break the surface tension. 
  • Cover the container with plastic wrap, securing it with a rubber band. 
  • Poke small holes in the plastic wrap. Gnats are attracted to the vinegar but will get trapped inside when they try to land on the surface. 

Red Wine Trap: 

  • Like the vinegar trap, fill a jar or bowl with red wine and a drop of dish soap. 
  • Cover and poke holes or leave it open. Gnats are drawn to the aroma of red wine. 

Overripe Fruit Trap: 

  • Place overripe or rotting fruit in a bowl and cover it with plastic wrap. 
  • Poke small holes in the wrap. The scent of the fruit will attract the gnats. 

Dish Soap Solution: 

  • Mix water with a few drops of dish soap in a spray bottle. 
  • Spray the mixture directly onto the gnats. The soap acts as a surfactant and breaks down the gnat’s protective coating, causing it to dehydrate and die. 

Store-Bought Sticky Traps: 

  • These are available at gardening or hardware stores. They attract and trap gnats, preventing them from reproducing and causing further annoyance. 


  • If you suspect the gnats are coming from a drain, you can try flushing it with bleach. However, bleach might not reach the eggs deeper inside the drain. It is essential to use this method cautiously and avoid mixing bleach with other chemicals. 

Essential Oils: 

  • Some essential oils, like peppermint, eucalyptus, and tea tree, can act as repellents. Dilute a few drops in water and spray around the affected areas. 

Diatomaceous Earth: 

  • This is a natural insect killer and can be sprinkled around plants or areas where gnats are a problem. It works by dehydrating the insects. 

Clean and Dry: 

  • Ensure your kitchen and bathroom areas remain clean and dry. Remove food residues, clean dishes promptly, and do not overwater plants. Wet environments attract gnats, especially fungus gnats. 

Hydrogen Peroxide: 

  • A solution of hydrogen peroxide can help get rid of fungus gnat larvae in plant soil. Mix a 1:4 ratio of 3% hydrogen peroxide to water and water your plants with it. This will kill the larvae without harming your plants. 

When implementing these methods, remember to monitor the situation closely. Some methods may be more effective than others, depending on the specific type of gnat and the extent of the infestation. 

Sealing Cracks and Openings Around the Home 

For homeowners looking to reduce the infiltration of gnats and other tiny pests, a systematic approach to home exterior maintenance is vital. Start by thoroughly inspecting the home’s exterior, targeting cracks, gaps, or openings in the walls, foundation, windows, and doors. Small cracks and gaps are prime entry points for pests, and sealing them with an exterior-grade sealant, such as silicone or polyurethane, can effectively block their access. For larger openings, especially those resulting from utility lines or plumbing fixtures, expandable foam can be used to create a robust barrier. 

Siding, often overlooked, plays a significant role in preventing pests. Damaged or warped siding can provide hidden pockets for insects. If you notice any signs of deterioration, it might be time to consider replacing it with more durable options like James Hardie fiber cement. These materials not only ward off gnats and insects but also enhance the home’s overall protection against the elements. Similarly, a well-maintained roof can act as an essential barrier against pests. Regularly check for signs of damage or wear, such as missing shingles, and ensure your attic space remains sealed and free of entry points. 

Windows are another focal point. Drafty or ill-fitting windows can easily become gateways for gnats. If they display signs of wear, fogging, or poor insulation, consider replacing them. Modern, energy efficient windows, especially those with tight seals and fine mesh screens, can effectively prevent the entry of even the smallest insects. 

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Steven Shortridge

District Manager

Portland, OR

Learn more about Steven