Can mites live in your bed? It depends on the type of mite. Spider mites cannot survive in your bed because they need live plant tissue to eat. They will die without a plant host. But dust mites are a different story. Those tiny creatures thrive in mattresses and pillows where they feed on dead skin flakes you shed while you sleep.
A friend of mine panicked last winter after finding tiny bugs near her bedroom window. She was sure spider mites in bed had become her new problem. I came over with a hand lens and found the mites on a potted fern sitting on her windowsill. They had zero interest in her sheets or pillows. The mites stayed on that plant because it was the only food source in the room. Once we treated the fern with soap spray and moved it to the kitchen, the bedroom bugs were gone within a day.
The biology explains why spider mites in bed isn't a real threat to you. Spider mites are plant pests in the Tetranychidae group. Their mouths are built to poke into plant cells and drain them dry. They can't pierce human skin, chew fabric, or eat dead matter. They feed on over 200 plant species but have zero animal hosts. If one crawls onto your hand, it will wander around and die because there's nothing for it to eat on you.
Dust mites are the ones that do live in your bedding for real. These come from a different group called Pyroglyphidae. They eat the tiny flakes of skin that fall off your body all day and night. Your mattress and pillows give them warmth, moisture, and a steady food supply. An average mattress can hold hundreds of thousands of dust mites at any given time. You can't see them because they're far smaller than spider mites, but you can feel their effects if you have allergies.
If you find tiny bugs near your bed, check your houseplants first. Look for stippling dots and fine webbing on the leaves of any plant near your sleeping area. Move infested plants to another room right away. Treat them with insecticidal soap or oil to kill the mites. This solves the spider mite side of your problem. You can also wipe down your windowsill and nightstand with a damp cloth to remove any stray mites that wandered off the plant.
For mites in bedding that are the dust mite type, you need a whole different plan. Wash your sheets and pillowcases in hot water above 130°F (54°C) every week to kill them off. Put dust-proof covers on your mattress and pillows to block them from getting deeper inside. Keep your bedroom humidity below 50% since dust mites need moist air to survive and breed. These steps won't wipe out every dust mite in your home. But they cut the numbers down enough to reduce your allergy symptoms at night.
In my experience, the fear of mites in bedding comes from mixing up these two very different pests. Spider mites stay on your plants and die fast without them. Dust mites stay in your fabrics and feed on your dead skin cells. Once you know which one you're dealing with, the fix becomes clear. Check your houseplants for webbing. Clean your bedding in hot water each week. You'll sleep better at night knowing what's what in your home.
Read the full article: Spider Mites: Full Guide to Control
