How to Get Rid of Dust Mites in Carpet

Dust mites aren't dirt. They're microscopic creatures that live in soft furnishings and feed on the flakes of dead skin we shed, and it's their droppings, not the mites, that set off the sneezing and the morning stuffiness.

Carpet is one of their favourite homes. It holds warmth, skin and moisture, which is everything a mite needs.

How do you get rid of dust mites in carpet?

You attack the two things they can't live without: warmth and humidity. Kill the ones that are there, remove the allergen they've left, then make the room a place they don't want to be.

• Keep indoor humidity under 50 per cent. Mites can't drink, so they pull moisture from the air, and below 50 per cent they struggle to survive. Air rooms daily, use an extractor fan in the kitchen and bathroom, and try not to dry washing indoors (Asthma + Lung UK).
• Vacuum carpets twice a week with a HEPA-filter machine, slowly, so the fine allergen is captured rather than blown about. Pull the furniture out every few weeks as well, since mites favour pile that's never disturbed, and the dents the furniture leaves lift most easily while they're fresh.
• Wash bedding and washable rugs weekly at 60 degrees. A 60-degree wash kills mites outright; a cooler wash only rinses some allergen away and the mites survive it (Allergy UK).
• Deep-clean carpets once or twice a year to clear the reservoir of allergen sitting at the base of the pile, below the depth a domestic vacuum's suction ever reaches however often you run it over the same patch.

Chemical sprays sold as mite killers rarely earn their keep. They do little about the allergen already in the fibre, and they do nothing about the humidity that let the mites thrive. Save the money.

What does shift the numbers is heat, extraction and tackling the bed itself, because a mattress holds warmth and moisture against a sleeping body all night and ends up carrying even more mites than the carpet under it. That's why it's worth pairing a carpet clean with mattress cleaning that clears allergens.

Can you see dust mites in a carpet?

No. A dust mite is about a quarter of a millimetre across, far too small for the naked eye, so a carpet that looks spotless can still hold plenty of them.

That's the catch. There's nothing to spot and nothing to smell. The only real signals are how you feel: worse indoors, worse in the morning, and better when you've been away from home for a few days.

Because you can't see them, people under-clean the two places mites gather most, the carpet and the mattress. Both matter.

Does steam cleaning kill dust mites?

Yes, when it's proper hot water extraction rather than a cool hire machine. Our system cleans at well over 60 degrees, hot enough to kill mites on contact, and the extraction then pulls the dead mites and their droppings out of the pile in the water.

That last part matters, because killing a mite doesn't remove the allergen it leaves behind. Dry methods that don't rinse can stir it back into the air.

The photos below are from one of our own jobs, a lounge carpet part-way through and then finished.

A hire machine runs cooler and with weaker suction, so it wets the carpet without reaching killing temperature and leaves moisture behind, which, if anything, suits the mites. Heat is the weapon. Proper extraction is what carries the dead mites and their droppings away, and the mattress side of the job is priced by size, fixed before we arrive.

Two related reads if this is an allergy problem rather than a cleaning one. The guide to cleaning the stains off a mattress covers the bed itself. If you have a cat, cat dander through the house is often the bigger trigger.