Hot water at or above 55°C (130°F) kills 100% of mites in laundry. That’s the single most reliable method, and it works without any additives. But not everything you own can handle a hot wash, so there are several effective alternatives depending on the fabric, the type of mite, and what you have on hand.
Hot Water Is the Most Effective Option
Research on house dust mites found that water temperatures of 55°C (130°F) or higher killed every mite in the wash. At lower temperatures, adding detergent, bleach, or other laundry products did not improve the kill rate. The temperature itself does the work.
A separate study testing four washing modes confirmed this pattern clearly. At 30°C, only 6.5% of dust mites died. At 40°C, just 9.6%. But at 60°C (140°F), every single mite was killed. A steam wash cycle performed equally well, achieving a 100% kill rate. So if your machine has a steam setting, it’s just as effective as a standard hot wash.
For scabies mites specifically, the CDC recommends machine washing all clothing and bedding used in the three days before treatment. Their guidance: use hot water and dry on the hot cycle. Temperatures above 50°C (122°F) sustained for 10 minutes kill both scabies mites and their eggs.
What Cold and Warm Washes Actually Do
Cold water washing doesn’t kill most mites, but it does something useful. A cold cycle removed more than 90% of the allergenic proteins that mites leave behind, even though the mites themselves survived. If your main concern is allergy symptoms and you’re washing delicate items that can’t take heat, cold washing still helps reduce the allergen load significantly.
In warm water (36°C to 38°C), washing with water alone, detergent, or detergent plus bleach removed 60% to 83% of live mites from clothing and bedding. That’s a meaningful reduction, but far from complete. The mites are physically flushed out rather than killed, and some survive the cycle. Neither powdered detergent nor liquid chlorine bleach significantly improved live mite removal compared to water alone at these temperatures.
Where bleach did make a difference was allergen removal. Items washed in detergent plus bleach lost 98% of their allergen content, compared to 84% for water alone or water with detergent. So if you’re washing in cool or warm water and want to strip away as much allergenic material as possible, adding bleach to the cycle helps with that specific goal.
Eucalyptus Oil for Delicate Fabrics
For items like wool blankets that can’t tolerate hot water, eucalyptus oil offers a well-studied alternative. A 30-minute presoak in a solution containing just 0.2% eucalyptus oil reduced recoverable live mites by 97% in woolen blankets. That concentration is low enough to be practical for regular household use.
The method involves emulsifying the eucalyptus oil with a small amount of liquid dishwashing detergent (four parts oil to one part detergent) before adding it to the soak water. In lab testing, more than 80% of mites died after 30 to 60 minutes of immersion in the 0.2% solution, with higher concentrations performing slightly better. After the soak, you wash the items as you normally would.
Other essential oils with documented activity against mites include tea tree oil, citronella, wintergreen, and spearmint. Among these, tea tree oil showed the strongest effect against both lice and mites, though the eucalyptus oil method has the most detailed laundry-specific research behind it.
The Dryer Matters as Much as the Wash
High heat drying is a powerful second line of defense. Even if your wash cycle doesn’t reach mite-killing temperatures, running items through a hot dryer cycle adds another round of lethal heat exposure. The CDC’s scabies guidelines specifically include the hot dryer cycle alongside hot washing, and dry cleaning (which uses chemical solvents rather than water) killed most or all mites in testing, though it did not reduce allergen levels in the fabric dust.
For anyone dealing with dust mite allergies, the combination of hot washing and hot drying covers both problems: the wash kills mites and flushes out allergens, and the dryer finishes off any survivors while further reducing moisture that mites need to thrive.
Freezing Works for Items You Can’t Wash
Stuffed animals, decorative pillows, and other items that can’t go in a washing machine can be sealed in a plastic bag and placed in a standard home freezer for 24 hours. Freezing kills dust mites effectively. After removing the item, wipe it down with a damp cloth to remove the dead mites and their allergenic waste. This method won’t remove allergens the way washing does, but it eliminates the living mite population.
A Practical Laundry Routine for Mites
The approach you choose depends on what you’re washing. For sheets, pillowcases, and towels that can handle heat, a wash at 60°C (140°F) followed by a hot dryer cycle is the gold standard. Everything dies, and nearly all allergens wash away.
For wool, silk, or other heat-sensitive fabrics, a 30-minute presoak with diluted eucalyptus oil before a cool wash gets you close to the same result without damaging the material. For items that can’t be washed at all, 24 hours in the freezer is the simplest option.
Washing frequency matters too. Mite populations rebuild quickly in bedding because of the warmth, moisture, and skin cells that accumulate during sleep. Weekly hot washing of sheets and pillowcases keeps numbers consistently low rather than letting colonies establish between occasional deep cleans.