Dust mites are invisible, but their effects can usually be felt — most of all at night.
Sneezing after waking up, itchy skin during or after sleep, nasal congestion in the morning, and allergy symptoms that worsen indoors.
Prolonged contact with bedding and upholstery increases exposure to allergens for hours at a time.
Treat the mattress, pillows and sofa — the three places you spend the most contact hours.