Environmental Allergy

Spring Cleaning - Eliminating Dust Mite Infestations After A Long Winter

woman sneezing while dusting blinds

Spring is synonymous with blooming flowers, chirping birds, and sunshine. It's also a time when we traditionally tackle house cleaning. However, amidst all this freshness, there lurks a tiny hidden enemy in our homes - dust mites. These microscopic invaders thrive as winter ends, leading to allergic reactions. In this article, we'll understand how to get rid of dust mites and how to prevent future infestations. 

What are Dust Mites?

Dust mites are minuscule arthropods, invisible to the naked eye, that cause substantial discomfort, especially for those suffering from dust mite allergies. These critters predominantly feed on organic matter produced by the decomposition of organisms such as flakes of shed human skin. A single dust mite can digest pieces of dead skin from humans or animals, metabolizing it for sustenance, and multiply prolifically in the right conditions. Dust mites thrive in warm, humid environments where these types of food sources are abundant.

Considered one of the top indoor allergens, dust mites are a common cause of perennial allergic rhinitis, a condition that can cause year-round symptoms. They can also trigger asthmatic symptoms in individuals with a predisposition, which underlines their role in causing substantial discomfort and illness. A common myth about dust mites is they bite like bedbugs or fleas. Interestingly, it’s not the dust mite itself that causes issues for humans, but rather their fecal matter and the body fragments they leave behind when they die.

Where Do Dust Mites Come From?

Dust mites can be found everywhere, but are most often found in our homes. One of the most common ways dust mites arrive inside is through outdoor air entering into the home. This could be a result of open windows or doors, HVAC systems, or even through gaps in the construction of the house. Every time you open a door or window, millions of microscopic particles, including dust mites, enter your home. These creatures can also be transported by hitching a ride on people, pets, and even new purchases entering into your home. They can easily attach to clothing and hair and be brought indoors unknowingly.

How Do You Know If You Have Dust Mites?

Determining the presence of dust mites in your home can be difficult, thanks to their microscopic size. However, experiencing a surge in allergy symptoms like sneezing, runny nose, itchy eyes and throat, coughing, and skin rashes might suggest their existence.

A tell-tale sign of having dust mites is seeing their tiny, dark, mite feces on your bedding, upholstered furniture, or other areas where dust often accumulates. These small specks are usually about the size of a poppy seed. Keep in mind, however, that these feces are easy to overlook, so not seeing them doesn't necessarily mean you do not have a dust mite problem.

If you or your family members have unexplained rashes, especially on areas of the body that are in frequent contact with your bed or furniture, dust mites could be the culprit. At home, dust mite testing kits are available that you can spread on your furniture or mattress. The reagents in these testing kits react with dust mite protein, revealing their presence.

What are the Most Common Places Dust Mites Accumulate?

Dust mites enjoy warm, humid environments and accumulate in places rich in their preferred food (dead skin cells). Therefore, mattresses, carpets, furniture, and even cuddly toys become their most frequented habitats. Here are some of the most common places where dust mites are found:

  • Bedrooms: Dust mites are especially rampant in bedrooms, particularly in mattresses, blankets, pillows, and other bedding, where they have access to plenty of dead skin cells.
  • Carpets and Rugs: Dust mites can live deep within the fibers of carpets and rugs, where they’ll find food and are protected.
  • Clothes: Dust mites can live in and on unwashed clothes, especially inside of a laundry basket where humidity can build up.
  • Stuffed Animals: Teddy bears and other soft toys can create a breeding ground for dust mites, especially if they have frequent contact with humans.
  • HVAC Systems: Dust mites can accumulate in heating and air conditioning vents and filters that are not regularly cleaned.
  • Pet Bedding: Pet bedding or any area where pets frequently sleep can be a popular place for dust mites to accumulate.
  • Unused Papers and Old Books: Dust mites feed on cellulose, a substance found in old books, magazines, and other paper materials.

What are the Best Ways to Get Rid of Dust Mites?

Getting rid of dust mites entirely is practically impossible, given their microscopic size and ability to multiply quickly. However, you can significantly reduce their numbers and neutralize their allergic impact by adopting these strategies:

  • Regular Cleaning: Regularly dust and clean your home to mitigate them. Use a damp cloth to dust surfaces, as a dry cloth can stir up mite allergens.
  • Vacuuming: Vacuum carpets, upholstery, curtains, and anywhere else dust accumulates. Use a vacuum cleaner with a high-efficiency particulate air (HEPA) filter, which is designed to trap small particles like dust mites.
  • Wash Bedding: Wash your sheets, pillowcases, blankets, and bed covers in hot water that’s at least 130 degrees Fahrenheit (54.4 Celsius) to kill dust mites. Then, dry them in a hot dryer or using the sun.
  • Allergen-proof Bed Covers: Cover your mattress, box spring, and pillows with dust mite covers or allergen-proof cases to block mites.
  • Reduce Humidity: Dust mites thrive in humid environments. Use air conditioning or a dehumidifier or to keep humidity below 50%.
  • Remove Carpets: If possible, replace wall-to-wall carpeting with hard flooring like wood or tiles. These types of flooring don't harbor mites as easily.
  • Freeze Non-Washable Items: For items you can’t wash on hot, such as plush toys, freezing can also kill dust mites. Place the item into a plastic bag and freeze for at least 24 hours.
  • Use Dust Mite Sprays and Essential Oils: Use a dust mite eliminator spray or essential oils on areas where mites accumulate. These sprays contain ingredients that kill dust mites and neutralize the allergens they produce. Some of the best essential oils to kill dust mites are eucalyptus, clove, and lavender.
  • Reduce Clutter: A cluttered home can enhance dust accumulation and provide more hiding spots for dust mites.
  • Clean Air Filters: Regularly clean or replace the vents and filters in your heating and air conditioning system and ensure your house has sufficient ventilation.

Controlling dust mites takes time and ongoing maintenance. It's important to consistently implement these steps to keep their populations low and prevent potential allergic reactions.

What are the Most Common Symptoms of a Dust Mite Allergy?

Though dust mites are invisible to the naked eye, the symptoms related to their presence are indeed noticeable. They are notorious for causing allergies or irritations, especially in individuals with asthma or hypersensitivity. Asthma sufferers might experience a higher frequency of asthma attacks, or difficulty breathing. However, it's important to note that such symptoms could also be attributed to other indoor or outdoor allergens, such as pollen, mold spores, pet dander, or insect allergens.

Typical symptoms of a dust mite allergy include:

  • Frequent Sneezing
  • Stuffy or Runny Nose
  • Postnasal Drip
  • Itchy Nose and Throat
  • Watery, Itchy, or Swollen Eyes
  • Coughing or Wheezing
  • Difficulty Breathing
  • Eczema and Skin Rashes

What is the Best Treatment for Dust Mite Allergies?

The treatment of environmental allergies includes 3 components: avoidance of triggers, taking medications to treat symptoms, and addressing the underlying cause with immunotherapy.

Avoidance of Triggers

You can significantly reduce the number of dust mites in your home and neutralize their allergic impact by adopting the cleaning strategies listed above, such as regular cleaning and vacuuming, frequent washing of your sheets and bedding, and using protective measures like allergen-proof bed covers and dust mite sprays and essential oils.

Medications for Dust Mite Allergies

Common treatments for dust mite allergies include decongestants and antihistamines. These medications help reduce symptoms such as congestion, sneezing, a runny nose, and itchiness. Another common form of treatment is nasal corticosteroids, which target inflammation in the nasal passages. Some medications work by blocking the chemicals that trigger an allergic response.

The following treatments are frequently used:

  • Antihistamines: These can alleviate symptoms of a runny nose, sneezing, and itching.
  • Decongestants: This medication provides relief from nasal congestion caused by allergies.
  • Leukotriene modifiers: These medications are beneficial for both allergy and mild asthma symptoms.
  • Nasal corticosteroids: These are effective in reducing inflammation in the nose.
  • Nasal antihistamines: These medications are useful for treating nasal congestion and a runny nose.


A dust mite allergy causes your immune system to overreact to exposure to dust mites. Unlike medications that treat these allergy symptoms, immunotherapy stimulates the immune system to counter this abnormal response. By gradually introducing ever greater quantities of the allergen, immunotherapy can dampen the allergic response over time and provide lasting relief.

There are multiple methods of immunotherapy, including allergy shots and sublingual immunotherapy.

  • Allergy shots (also called subcutaneous immunotherapy, or SCIT) are one of the best treatments available. These allergen vaccines are targeted against your unique allergy triggers.
  • Sublingual immunotherapy (SLIT) introduces small doses of allergens under the tongue, which causes a decrease in the body’s production of a specific allergic antibody called IgE. This process teaches your immune system to tolerate exposure to environmental allergens. SLIT is offered in two forms: tablets and drops.

While over-the-counter medicines can provide temporary relief for dust mite allergy symptoms, the advisable course of action is to consult an allergist. At Allergy Partners, our specialists in allergy and immunology provide personalized treatment plans based on each patient's unique needs.

Dust mites, although tiny, can significantly disrupt your peace. Identifying their presence and learning how to tackle them can substantially reduce the impacts on your health. Let your spring be about the sun, fresh air, fitness, fun, and rejuvenation, not allergies. Here's to a happy spring cleaning!