How to Get Rid of Dust Mites: Room by Room

When you have an allergy, your immune system mistakes a harmless substance (like mite protein) for a dangerous invader ⁽²⁾. It produces antibodies to fight it off, causing inflammation in your nose or lungs.

If you are reacting to the dust in your home, you might experience:

• Runny or stuffy nose.
• Sneezing fits.
• Postnasal drip.
• Red, itchy, or watery eyes.
• Itchy nose, mouth, or throat.
• Coughing.
• Swollen, blue-colored skin under your eyes.
• Itchy skin or eczema flare-ups.

For those with asthma, dust mites can be dangerous. Exposure can trigger:

• Chest tightness or pain.
• Audible wheezing when exhaling.
• Trouble sleeping due to shortness of breath ⁽³⁾.

Keep in mind that the “dust” in your home is mostly mite waste and dead bodies. When you sweep or vacuum without a good filter, you launch that debris into the air and inhale it.

Who is most at risk?

• Children: Early exposure to high levels of mites increases the risk of developing an allergy.
• Genetic Lottery: If your parents have allergies, you are more likely to have them too.
• Chronic Conditions: Those with existing asthma or sinus issues are more susceptible to complications like sinus infections or severe asthma attacks ⁽⁴⁾.

Having a runny nose doesn’t guarantee you have a mite allergy. If symptoms persist year-round, especially when you are in bed or cleaning, you should see a doctor.

They typically use two methods to confirm the culprit:

• Skin Prick Test (SPT): A doctor pricks your skin with a tiny drop of the allergen. If you are allergic, a red, itchy bump (hive) appears within 20 minutes ⁽⁵⁾.
• Specific IgE Blood Test: If you have a skin condition or take certain meds, skin testing might not work. Instead, a blood test measures specific antibodies to see if your immune system is fighting dust mites ⁽⁶⁾.

No, dust mites do not bite. They lack the mouthparts to pierce skin.

If you wake up with itchy red welts, you are likely dealing with bed bugs, fleas, or a skin reaction to the allergen itself ⁽⁷⁾.

To manage the reaction, doctors often suggest:

• Antihistamines: Over-the-counter options like Zyrtec or Claritin block the chemical that causes itching and sneezing.
• Decongestants: These help clear a stuffy nose or sinus pressure.
• Nasal Corticosteroids: Sprays that reduce inflammation in the nose.
• Immunotherapy (Allergy Shots): A long-term treatment where you receive small injections of the allergen to build up immunity ⁽⁸⁾.

Dust mites do not live in human hair. They prefer your pillow. However, a different critter called the follicle mite (Demodex folliculorum) does live in hair follicles, particularly around eyebrows and eyelashes. They feed on oil glands, not dead skin flakes ⁽⁹⁾.

Lower the Humidity

This is the single most important step. Dust mites do not drink water; they absorb moisture from the air. If the relative humidity drops below 50 percent, they dry out and die.

Use a dehumidifier to keep your home between 35 and 50 percent humidity. We recommend getting a digital hygrometer (humidity monitor) like the ThermoPro to keep an eye on the levels.

Adjust the Temperature

Mites love it warm (between 68°F and 77°F). Keeping your home a little cooler slows down their breeding cycle. It won’t kill them instantly, but it helps.

Air Purifiers

Air purifiers are great for capturing airborne allergens, but they have limits. Dust mites don’t fly; they settle on surfaces. A purifier helps capture the particles kicked up while you clean.

Ensure your unit has a True HEPA filter, which captures 99.97% of particles as small as 0.3 microns. The Whirlpool Whispure is a solid choice.

Vacuum with HEPA

Standard vacuums often suck up dust and blow microscopic allergens right back out the exhaust. You need a sealed vacuum with a HEPA filter.

If you have carpets, use a vacuum with a beater bar (brush roll) to vibrate the fibers and loosen the dust. For hard floors, use a suction-only setting to avoid scattering debris.

Mopping

Vacuuming doesn’t get everything. Follow up on hard floors with a damp microfiber mop. Avoid dry sweeping, which just launches dust into the air.

Steam Cleaning

If you have wall-to-wall carpet, rent a steam cleaner periodically. The heat is lethal to mites. Just ensure the carpet dries quickly; leaving it damp promotes mold and more mites.

Upholstery Maintenance

Fabric couches are dust magnets. Vacuum them weekly using the upholstery tool and a crevice tool to get deep into the cracks. Leather or vinyl furniture is much better for allergy sufferers because mites can’t burrow inside and can be easily wiped down.

Steam It Out

Use a handheld steam cleaner on your sofa and mattress surface. The steam penetrates the fabric and kills mites on contact.

Dusting Surfaces

Forget the feather duster. Use a damp microfiber cloth to trap dust on tables and shelves. If you use a dry cloth, you are just moving the dust from the table to your nose.

Wash Weekly in Hot Water

This is non-negotiable. Wash all sheets, pillowcases, and duvet covers at least once a week. The water temperature must be 130°F (54°C) or higher to kill the mites. Cold water cleans the fabric but leaves the mites alive.

Freeze Non-Washables

Have a delicate pillow or a child’s special blanket? Seal it in a bag and put it in the freezer for 24 hours. The cold kills the mites. Afterward, wash it on a gentle cycle to remove the allergens.

Protective Covers

Invest in “dust mite-proof” or “allergen-impermeable” zippered covers for your mattress, box spring, and pillows. These have a weave so tight that mites cannot get in or out. Allergy specialists note that encasing your mattress this way reduces symptoms more reliably than an air cleaner does, because the mites live down in the bedding, not up in the air.

Heavy drapes collect dust like crazy. Replace them with roller shades or easy-to-clean blinds if possible.

If you keep the curtains, wash them regularly in hot water. For blinds, use the “tong hack”: wrap damp microfiber cloths around kitchen tongs and clamp down on each slat to wipe both sides at once.

Stuffed toys are mite hotels. To keep them safe for kids:

• Wash them: Check the label, then wash in hot water if allowed.
• Freeze them: 24 hours in a sealed bag in the freezer works wonders.
• Steam them: Use a garment steamer to sanitize the surface.

Your pets contribute to the problem by shedding dander, which feeds the mites. Wash pet bedding weekly in hot water. If the bed has a removable cover, wash it; if not, you might need to replace the whole bed periodically or switch to a bed with a wipeable surface.

Yes. Lysol contains ethanol and other ingredients that can kill dust mites on contact ⁽¹²⁾. However, spraying your whole bed with Lysol isn’t the best idea for your skin/lungs, and it doesn’t remove the dead mite bodies that cause allergies.

Technically yes. Salt draws moisture out of the environment. If you used enough of it, it could dehydrate mites. However, sprinkling salt on your carpet is messy and generally ineffective compared to using a dehumidifier.

No. Baking soda is great for absorbing odors and moisture, but it does not kill mites. It can help freshen up a mattress, but don’t expect it to end an infestation.

Mostly no. Vinegar is acidic and creates an environment mites dislike, but it is not a reliable killer. It works better as a cleaner to wipe away hard surfaces where dust collects.

Yes! The extreme heat of an iron is lethal to mites. Ironing your sheets and pillowcases after washing them is a fantastic extra step to ensure they are mite-free ⁽¹³⁾.