Pest and Diseases

How To Get Rid of No See Ums In House

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No one likes pests in their homes, and to make matters worse, some are so tiny you cannot see them like the no see ums. Also known as biting midges, no see ums are small flies between one and three millimeters long that feed on the blood.

The bites from no see ums leave itchy marks on the skin that expand into large, raised welts. These insects also transmit diseases. If you want to learn how to get rid of no see ums, here is everything you need to know.

How to Get Rid of No See Um Naturally

Here is a list of how to get rid of no see um naturally:

1. Essential Oil

Essential oils like lavender, eucalyptus, and citronella can help repel these pesky insects. These oils are known for their potent scents, which these tiny insects find unpleasant. To use them, you can create a simple spray by mixing a few drops of your chosen essential oil with water in a spray bottle.

Shake well, then spray the mixture on your skin, clothing, or around areas where no-see-ums are a problem, such as outdoor seating areas or doorways. This spray creates a protective barrier, allowing you to enjoy your time outdoors without being bitten.

2. Fans

No-see-ums are weak fliers, meaning they struggle to fly against even a light breeze. This makes it difficult for them to reach their target or stay in one place. So, placing fans around outdoor seating areas can help keep them away.

The airflow from a fan makes it difficult for these insects to navigate and land on you. You can create a barrier by setting up fans around outdoor seating areas and patios to protect yourself from the pesky insects. This simple solution also adds a cooling breeze for a comfortable experience. 

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3. Diatomaceous Earth

Diatomaceous Earth (DE) is a fine, powdery substance that feels soft to humans but is lethal to insects like no-see-ums. When insects come into contact with diatomaceous earth, the sharp edges of the diatoms pierce the insects' outer layer, causing them to lose moisture and die.

To use DE for no-see-ums, sprinkle it around areas where they gather, such as windowsills, doorways, or outdoor seating areas. It is safe for humans and pets, making it a great natural alternative to chemical pesticides. Just ensure that you use food-grade DE. 

4. Apple Cider Vinegar

Creating a trap using apple cider vinegar can reduce the population of no-see-ums naturally. No-see-ums are attracted to the scent of apple cider vinegar, so this method exploits their natural tendencies. To make the trap, fill a shallow bowl with apple cider vinegar.

Cover the bowl tightly with plastic wrap, then poke small holes in the wrap with a toothpick or fork. The holes should be large enough for the no-see-ums to enter but small enough that they cannot easily escape. The vinegar draws them in, and once inside, they cannot escape and eventually drown.

5. Plants

Planting certain plants like lavender, marigolds, or basil can repel no-see-ums due to their strong scents. Lavender emits a smell that many insects, including no-see-ums, find unpleasant. Marigolds contain a compound called pyrethrum, commonly used in natural insect repellents. 

Basil, especially lemon basil, has a citrusy scent that can deter pests. By planting these around your home or in your garden, you create a natural barrier that makes the area less attractive to no-see-ums, helping to keep them away.

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6. Proper Drainage

Proper drainage is essential in controlling no-see-ums because these insects thrive in moist environments, particularly around standing water. No-see-ums lay their eggs in damp soil, puddles, or stagnant water sources. By eliminating standing water, you reduce potential breeding grounds. 

This includes regularly emptying bird baths, cleaning gutters, fixing leaky hoses or pipes, and ensuring your lawn has good drainage. Even small amounts of water, like in plant saucers, can become breeding spots, so keep your surroundings as dry as possible.

7. Screen Windows and Doors

Screening windows and doors helps keep no-see-ums away by creating a barrier these tiny insects cannot easily penetrate. No-see-ums are 1/16 to 1/8 inch long, so standard screens with fine mesh are effective in blocking them out.

When screens are properly installed and fit snugly, they prevent no-see-ums from entering your home while allowing fresh air to circulate. It is important to ensure that screens are in good condition with no holes or tears, as even small gaps can allow these tiny pests to slip through.

8. Keep Doors Closed

No see um bites can stay on the skin for two weeks, so protect yourself from these pesky insects by preventing them from entering your home. One way to do that is to keep your doors closed once you enter or leave your home.

These insects can enter through gaps or open doors. This method is especially useful during peak activity times, such as early morning or dusk, when no-see-ums are most active. Installing screens on doors that need to be open for ventilation can further enhance protection.

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9. Keep Your House Cool

No see ums bugs are drawn to warmth and moisture and thrive in warmer temperatures. By maintaining a cooler temperature inside, preferably using an AC, you can make your home less hospitable to them.

Additionally, cooler indoor conditions often mean lower humidity levels, which can further deter these pests since they prefer moist environments for breeding. While this strategy can help reduce their presence, it is most effective when combined with other pest control methods like screens and proper drainage.

10. CO2 Traps

CO2 traps can be used to reduce the see um population. When CO2 is released from these traps, the insects are drawn toward the trap only to realize they are trapped and cannot escape. To make a CO2 trap, cut a plastic bottle in half sideways.

Fill the bottom half with a sugar yeast mixture. The yeast will ferment and release CO2. Put the top half of the bottle upside down on the bottom half, like a funnel, and tape them. Cover the top with a cloth so the CO2 can escape, but bugs cannot enter.

11. Dehumidify

Dehumidifying can help repel no-see-ums because these pests thrive in moist environments. Lower humidity makes your home less attractive to them and limits their breeding opportunities.

To reduce humidity, place a dehumidifier in humid areas, such as basements or bathrooms, and set it to maintain a humidity level below 50% for optimal results. You can also use exhaust fans in areas like the kitchen and bathroom to reduce moisture and improve air circulation. Additionally, use moisture-absorbing products to help keep the air dry.

12. Clean Garden

Cleaning your garden helps repel no-see-ums by eliminating their breeding sites and reducing the overall habitat attractiveness. These insects thrive and reproduce in damp, overgrown areas such as leaf litter, tall grass, and stagnant water.

You can reduce their population by removing fallen leaves, trimming overgrown plants, and clearing standing water. Additionally, a well-maintained garden ensures good air circulation and dries moisture that might attract no-see-ums. Regular garden upkeep disrupts their life cycle.

How to Get Rid of No See Um Chemically

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Here is everything on how to get rid of no see um chemically.

13. Insecticide

Insecticides containing permethrin or pyrethroids are effective at killing no-see-ums on contact. These chemicals lead to paralysis and death. When applied to outdoor areas where no-see-ums are active, such as gardens, patios, or around windows and doors, the insecticide forms a barrier that kills them when they come into contact with it.

You can apply these insecticides as sprays or in granular form, depending on the product. It is important to follow the label instructions carefully, and regular reapplication may be needed to maintain effectiveness.

14. Foggers

Outdoor foggers release insecticide in the form of a fine mist or fog into the air, targeting flying insects like no-see-ums. These foggers work by dispersing a chemical insecticide over a large area, quickly killing no-see-ums on contact.

To use a fogger, you typically activate it in your yard or outdoor space when no-see-ums are most active, such as early morning or evening.  While effective for reducing no-see-um populations in a specific area, the effects usually last only a few hours to a day, so repeated treatments may be necessary.

15. Repellent Sprays

Repellent sprays containing DEET, picaridin, or IR3535 make your skin less attractive to no-see-ums, effectively preventing them from biting you. These chemicals interfere with the insects' ability to detect the carbon dioxide and other cues that guide them to their host.

Apply the repellent evenly over all exposed skin, following the product instructions for the best protection. Some repellents need to be reapplied after a few hours, especially if you are sweating or swimming. 

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16. Residual Sprays

Residual sprays are chemical treatments applied to outdoor surfaces like patios, porches, decks, and other areas where no-see-ums might land or rest. These sprays contain insecticides that leave a lasting residue on the treated surfaces. When no-see-ums come into contact with these surfaces, the insecticide kills them on contact.

The residual effect means that the spray continues to be effective for an extended period, often several weeks, depending on the product used. This creates a protective barrier helps to reduce the no-see-um population over time.

17. Larvicides

Larvicides are chemicals used to target and kill the larvae of no-see-ums before they mature into biting adults. No-see-ums often lay their eggs in water, where the larvae develop. By applying larvicides to these breeding areas, such as standing water, ponds, or marshy spots in your yard, you can effectively disrupt their life cycle.

Applying larvicides to water sources is especially helpful in areas where other control methods might not reach. This method is particularly effective because it targets the pests at a vulnerable stage, reducing the overall population. 

What are No See Ums

No-see-ums are tiny, biting flies that belong to the insect family Ceratopogonidae. They are so small that they can easily pass through standard window screens. They are extremely small, often less than 2 millimeters long, with dark-colored bodies and delicate wings. Both male and female no-see-ums feed on plant nectar, but females require a blood meal to produce eggs. They are most active at dawn and dusk.

Their bites can cause intense itching, redness, and swelling. Repeated bites can lead to skin infections, and in some cases, allergic reactions can occur. As a result, these tiny pests can significantly disrupt outdoor activities and enjoyment. Additionally, they can also transmit certain diseases in some regions.

What Does a No See Um Bite Look Like

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A no-see-um bite usually shows up as small, red, and itchy bumps on your skin. These bites are often mistaken for mosquito bites but are typically smaller and tend to appear in clusters. They are tiny, less than a quarter of an inch in size, and are usually red or pink. They can be very itchy, sometimes even more than mosquito bites, making you want to scratch them, and are often found on exposed skin like your arms, legs, neck, and face.

It may take a few hours for the itching and redness to appear after being bitten. Some people might also notice mild swelling, warmth, and, in some cases, small blisters or welts. If you have a severe reaction, like significant swelling or allergic symptoms, it's best to see a healthcare professional.

Where Are No-See-Ums Found

No-see-ums are found in various environments, primarily in warm, humid areas. They thrive in regions with moist soil, standing water, and abundant vegetation. Here are some common places where no-see-ums are found:

  • No-see-ums are often found near beaches, salt marshes, and mangroves, where the moisture and organic matter provide ideal breeding conditions.
  • Swamps and Marshes provide the damp, nutrient-rich environment that no-see-ums need to lay their eggs and develop.
  • Forests and woodlands, especially those with streams or other water sources, are common habitats for no-see-ums.
  • Overwatered lawns, gardens with poor drainage, and areas with leaf litter or compost can attract no-see-ums.
  • Lakes, ponds, and rivers are prime locations for no-see-ums, as they lay their eggs in the moist soil or water's edge.
  • No-see-ums are more prevalent in warmer climates, particularly in tropical and subtropical areas, where the humidity supports their life cycle.

Why Do No See Ums Invade Your House

No-see-ums search for food, breeding sites, and favorable conditions inside homes. These tiny insects are attracted to the warmth, moisture, and carbon dioxide that humans and pets produce. Here are some reasons why they might enter your home:

  • Food Source: No-see-ums are drawn to blood because they need it to reproduce. They can detect carbon dioxide and body heat, which is why they come inside to find people and animals.
  • Moisture: Homes with high humidity, like bathrooms, kitchens, or basements, are perfect for no-see-ums. They love damp environments, which are great for them to lay their eggs.
  • Breeding Grounds: If you have standing water, wet soil, or overwatered houseplants, no-see-ums might see these spots as great places to lay their eggs.
  • Light Attraction: No-see-ums, like many bugs, are attracted to light. If you have windows or doors open with lights on inside, these tiny pests might come into your home, especially around early morning or evening when they’re most active.
  • Entry Points: They can easily get inside through tiny gaps in screens, windows, or doors, especially if these aren’t properly sealed or have any tears.