How to Remove Bed Bugs From a Mattress

Bed bugs on a bed are almost never only on the mattress. They shelter in the piping, seams, stitching, and tags of the mattress, inside the box spring or foundation beneath it, and in the joints, slots, and screw holes of the frame and headboard ¹². That one fact shapes the whole answer, because a mattress cannot be washed, tumble dried, or frozen the way sheets can.

So the plan for the sleep surface is narrow and specific. Confirm the insect. Bag the bedding without carrying it loose through the house. Inspect and vacuum every seam, fold, and label you can reach. Use steam only if your equipment truly reaches a lethal surface temperature. Then seal the mattress and its foundation inside bed-bug-proof encasements and leave them on for at least a year while the rest of the room is treated ³⁴.

Two things are worth settling before you start. Most mattresses do not need to be replaced, and hauling one to the curb early tends to spread bugs through a building without fixing anything ⁵⁴. And no single step on the mattress will end an infestation, because bugs remain in the frame and the room. Clearing them normally takes repeated inspection, more than one treatment, and in most homes a licensed professional ⁶⁴.

Bed bugs are not known to spread disease to people, which is usually the first thing people want to know. What they do cause is itching, broken sleep, and, when scratching breaks the skin, secondary infection ².

First, Confirm It Is Actually Bed Bugs

Bites are not proof. Bed bug bites resemble mosquito or flea bites, some people never develop a visible mark, and marks can take as long as two weeks to appear ². Dark spots on a sheet are not proof either.

Look for a combination of physical signs: live insects, pale eggs and eggshells about 1 millimeter long, shed skins, dark fecal spots that bleed into fabric the way a marker does, and rusty smears where a fed bug was crushed ¹. Unfed adults are flat, oval, reddish brown, and roughly 1 to 7 millimeters long ².

If all you have so far is staining, our guide to black spots on sheets works through the alternatives, including mold, dye transfer, and old blood. If you find an insect, trap it under clear packing tape or in a sealed container instead of crushing it, and have it identified by a pest professional or your local extension service. Making sure you have bed bugs rather than fleas, ticks, or another insect is the first item on EPA's list for a reason: treating the wrong pest costs money and adds pesticide exposure for no benefit ⁷.

Contain It Before You Start Moving Things

Much of the avoidable damage happens in the first hour, when bedding gets carried to a shared laundry room, a mattress goes out into the hallway, or a dresser moves into another bedroom.

• Sort laundry inside the affected room and put each pile straight into a plastic bag, then seal the bag before it leaves the room. Read the care labels as you sort so you can use the hottest setting each fabric tolerates ⁴⁸.

• Do not move furniture or belongings to another room. Relocating things out of an infested room is one of the most reliable ways to spread bed bugs through a home ⁴.

• Do not store anything under the bed. Under-bed storage adds hiding places and makes every later inspection harder ⁴.

• Do not put the mattress out yet. Purdue Extension is direct about this: do not discard mattresses or furniture until a pest control operator has inspected them, because they often do not need to go ⁵.

• Pull the bed about 6 inches away from the wall and keep bedding and bed skirts off the floor so the bed is not bridged to the rest of the room ⁸.

Move inspected, cleaned items into a "clean zone" in the same room, ideally in sealed bags or bins, so you are not searching the same things twice ⁴.

How to Inspect the Mattress and Foundation

You need a flashlight, an old plastic card, a roll of wide clear tape, and a cloth with hot soapy water. Hold the flashlight nearly parallel to the surface so eggs and small nymphs cast a shadow, run the card's edge along seams and crevices to push bugs into the open, and use the tape to capture what you find ⁴.

Work in this order:

1. The five accessible sides of the mattress. Check every edge and corner, all stitch lines, the piping, and the area around the label while the mattress is still on the bed ⁴¹.

2. The underside. Stand the mattress upright and inspect the bottom surface and its seams ⁴.

3. The box spring or foundation. Repeat the same search. Box springs usually have plastic edge guards and a loose fabric dust cover, or ticking, stapled underneath, and the seams and edges on that underside are among the most common hiding places on a bed. To rule out bugs inside, the ticking can be removed so you can check the wood, cracks, and screw holes, then re-stapled afterward ⁴⁹.

4. The frame and headboard. Check all sides even on a metal frame, paying attention to joints, overlapping parts, slots, and screw holes. Headboards and footboards are frequent sites of a first infestation ⁴⁹.

A bed bug is about as wide as a credit card, so any gap that will take the edge of a card is a possible harborage ¹.

What Works on the Sleep Surface, and What Does Not

Method	What it does on a mattress	Real limits
Targeted vacuuming of seams	Removes some live bugs from creases, folds, piping, and buttons	Rarely reaches deep harborages, leaves glued eggs behind, and bugs survive the trip through the hose, so the contents must be sealed and thrown out 49
Steam from a suitable steamer	Kills bugs and eggs on contact wherever the steam actually lands	Surface treatment only, with no residual effect and limited penetration into fabric, so it must be repeated and combined with other methods 94
Bed-bug-proof encasement	Traps whatever is inside the mattress or foundation so it starves, and makes later inspection far easier	Does not stop bugs elsewhere in the room from crawling onto the bed and biting, and fails if the zipper gaps or the fabric tears 39
Hot wash and hot dryer	Kills all life stages on bedding, pillow covers, and clothing	Applies to launderable textiles only. A mattress cannot go in a washer or dryer 104
Whole-room heat by a professional	Can kill bugs and eggs throughout a room, including inside the mattress	Needs specialized equipment and monitored temperatures, leaves no residual protection, and can damage heat-sensitive belongings 411
Freezing	Kills all life stages in small items held cold enough for long enough	A mattress will not fit, and a freezer must hold 0°F at the item's center for four days 46
Insecticide labelled for that exact site	One part of a professional plan, applied only where the label permits	Many products are not permitted on a sleep surface, resistance is common, and companies usually avoid spraying the sleeping surface at all 119
Foggers and bug bombs	Nothing useful	The aerosol does not reach harborages, field populations are largely unaffected, and misuse can cause poisoning, fire, or explosion 123
Rubbing alcohol, kerosene, gasoline	Nothing useful	Not a treatment, and they ignite easily 34
Buying a new mattress	Nothing on its own	Bugs left in the frame, headboard, and room will infest the replacement 49

Working Through the Bed, Step by Step

1. Strip the bed and put the bedding through heat

Sheets, pillowcases, blankets, mattress pads, and pillow covers are the easy win, because heat kills every life stage. EPA and university extension guidance agree on the practical rule: wash at the hottest temperature the fabric allows, then dry on high heat for at least 30 minutes, and do not assume washing alone is enough ⁸⁴. Laboratory work supports both halves. A 60°C (140°F) wash killed all life stages, and a hot tumble dry above 40°C (104°F) for at least 30 minutes did the same ¹⁰.

For dry-clean-only items, skip the wash, run them through the dryer on medium to high heat for 30 minutes, then have them cleaned. Drying kills the bugs; it does not clean the garment ⁴.

Fold clean items straight out of the dryer into a new clean bag and keep them bagged until the infestation is over, especially if you are using a shared laundry room. Do not set clean laundry on a folding table you have not inspected ⁴¹³.

2. Vacuum the seams, then get the contents out of the house

Use the strongest suction with a crevice tool and work slowly along seams, folds, piping, buttons, and the underside edges of the box spring. Do not press hard, because pressing can flick bugs and eggs off the fabric instead of collecting them ⁴.

Vacuuming reduces numbers rather than eliminating them. Ordinary household vacuuming rarely reaches typical hiding places, and eggs are glued to surfaces, so plan on repeating it in the spots where you already found bugs ⁹⁴.

Bed bugs survive the trip through the hose, so finish the job properly. Remove the bag, tape it shut, put it inside a second sealed plastic bag, and take it to an outdoor bin right away. With a bagless vacuum, empty the canister into a sealed bag, wash the canister in hot soapy water, and wash, freeze, or replace the filter. Keep water away from the electrical parts, and tape over the nozzle if you will use the vacuum elsewhere ⁴³.

3. Steam only if your equipment reaches a lethal temperature

Steam kills bed bugs and their eggs on contact, which makes it one of the few things you can reasonably apply to a sleep surface. It only works where the steam actually lands, and it leaves nothing behind afterward ⁹.

The equipment matters more than the technique. University of Minnesota Extension recommends a commercial steamer of at least one gallon capacity, preferably with steam volume control, and warns specifically against carpet cleaning machines and clothing steamers because they do not get hot enough. Fit a wide nozzle rather than a pinpoint one, since a concentrated jet blows bugs away instead of killing them, and move slowly enough that the surface reaches 160 to 180°F, checked with an infrared thermometer. The fabric should end up damp, not wet, and a fan afterward helps it dry ⁴. EPA sets a lower floor of at least 130°F at the surface, with a diffuser and no forceful airflow so bugs are not scattered ³.

Steam at these temperatures burns skin and can damage some fabrics, so test a hidden area first, direct the wand away from yourself, and never let a child operate the machine ⁴. Our guide to whether it is safe to steam clean a mattress covers the moisture and material questions in more detail.

4. Seal the mattress and foundation in encasements, and leave them on

This is the step that does the most for the mattress itself. A bed-bug-proof encasement is a zippered cover that goes fully around the mattress, with a second one for the box spring or foundation. Anything sealed inside cannot feed, and nothing new can get in, which also turns every future inspection into a quick look at a smooth surface instead of a hunt through seams ³⁴.

Choose a cover sold specifically for bed bugs. The zipper has to close completely, and the material has to survive a year of use ⁸⁴. Check it regularly, because a tear or a gap at the zipper undoes the point of it ¹³⁹.

Leave it on for at least a year. Bugs sealed inside begin dying within about two weeks, but Minnesota, Purdue, and EPA guidance all frame the useful duration as roughly a year ⁴⁵⁸. Starvation research explains that margin. At ordinary room temperature, fifth-stage nymphs and adults in one study survived a mean of about 42 to 143 days without a blood meal depending on the strain, and young nymphs died much sooner ¹⁴. A year is a sensible practical margin rather than a proven exact cutoff.

One caveat worth being clear about: an encasement does not stop bed bugs living in the frame or elsewhere in the room from crawling over it and biting you ⁹. It protects and simplifies the mattress. It does not treat the room.

If a professional is coming, ask before you encase. Preparation lists often include encasing the mattress and box spring, but the technician may want access to the bare mattress and the underside of the bed first ⁴⁵. Our guide to whether you really need a mattress protector explains the difference between a waterproof pad and a full zippered encasement.

5. Isolate the bed and keep monitoring

Once the mattress is encased, make the bed harder to reach. Keep it away from the wall, keep bedding off the floor, and stop storing anything underneath ⁸⁴.

Interceptor traps under the bed and furniture legs are the practical monitoring tool. They catch bugs travelling to and from the bed and give you a way to judge whether treatment is working ⁴⁶.

Then give it time. After a professional treatment, three weeks with no bites, live bugs, fresh fecal spotting, or cast skins suggests the infestation is controlled. Insecticide programs usually need two or three visits, and larger or more widely spread infestations need more ⁴.

What Never Belongs on a Mattress

This is where bed bug treatment does real harm to people. Surveillance in seven states identified 111 acute illnesses linked to insecticides used against bed bugs between 2003 and 2010, including one death. Pyrethroids, pyrethrins, or both were involved in 89% of cases, and the most common contributing factors were excessive application, failure to wash or change pesticide-treated bedding, and inadequate notification that an application had happened ¹⁵. In the fatal case, two products were applied to a home and to the mattress and box springs, neither registered for bed bugs, and nine fogger cans were released the same day without following the label instruction to air out the treated area ¹⁵.

So, plainly:

• No total-release foggers or bug bombs. In a controlled test, field-collected bed bugs showed little or no effect from two hours of direct exposure to three over-the-counter foggers, and even a pyrethroid-susceptible laboratory strain survived when it had a thin layer of cloth to shelter under ¹². EPA's position is that a fogger must never be your only method, must list bed bugs on the label, and can cause fire or explosion when misused ³.

• No rubbing alcohol, kerosene, or gasoline. They are not treatments, and they ignite easily ³⁴.

• No outdoor, garden, or agricultural pesticides indoors. EPA is explicit that a product intended for outdoor use is very dangerous inside and will not solve a bed bug problem, and Minnesota Extension warns it can make a household seriously ill ¹¹⁴.

• Nothing homemade or "custom formulated," and nothing labelled in a language you cannot read. Never apply a pesticide to your own skin or a child's ⁴.

• No pesticide on a mattress, pillow, or bedding unless the label names that exact site. The label states where a product may be used, how often, what protective equipment to wear, and how long to stay out of the room. It is the legally binding instruction, not a suggestion ¹¹⁴.

Two related points come up constantly. Desiccant dusts are registered for cracks and crevices only, to limit what people breathe in, so they are not a mattress product, and pool-grade or food-grade diatomaceous earth should not be used at all because inhaling it can harm you ¹⁶³. Sticky traps are not a bed bug tool either ³.

It is also worth knowing that pest control companies usually will not spray the sleeping surface or seating areas, and will not treat bedding or clothing, directing those to heat instead ⁹. That is exactly why laundering, steam, and encasement carry so much of the load on a bed.

Heat, Cold, and the Sunshine Question

Heat works, but the margins are tighter than people expect. Bed bugs and their eggs die within 90 minutes at 118°F (48°C) and immediately at 122°F (50°C), which is why professional whole-room treatments run the air temperature between roughly 135 and 145°F with remote thermometers placed around the home, and typically take six to eight hours ⁴. EPA's integrated pest management guidance gives a comparable benchmark of at least 120°F held for 90 minutes to kill all life stages including eggs ⁶.

That is also why the improvised version is a bad idea. Do not try to heat a room with your thermostat, a space heater, a propane heater, or a fireplace. It does not get the hiding places hot enough and it is genuinely dangerous ³.

Cold works too, but not in a way most homes can manage. All bed bug life stages die once their body fluids freeze. One study estimated the temperature for 99% mortality across all life stages at about -31°C (-24°F), and found that reaching complete mortality at a more household-like -16°C (3°F) took roughly 80 hours of continuous exposure ¹⁷. Practical guidance rounds this to a freezer at or below 0°F for four days, measured at the center of the item, with bulky items needing longer to get there ⁴⁶. A mattress will not fit in a freezer, so this is a route for books, shoes, toys, and other small items. Winter weather outdoors is unreliable because of daily temperature swings, and trying to freeze a home by opening the windows risks structural and plumbing damage without killing the bugs ⁴.

The sun is the one place where good guidance genuinely differs. EPA says black plastic bags in a hot, closed car can work, with success depending on your climate and other factors, while Minnesota Extension advises against wrapping items in black plastic and leaving them in the sun because it will not get hot enough ³⁴. Treat it as unreliable rather than a method to count on, and use a dryer whenever the item tolerates one.

When a Mattress Is Genuinely Not Worth Saving

Most are worth saving, and both Purdue and University of Kentucky guidance say so explicitly, treating encasement as a more economical option than replacement ⁵⁹. A few mattresses are not:

• The cover is torn or holed, so bugs and eggs are likely inside the mattress where nothing you apply can reach them ⁹.

• A professional inspects the bed and recommends disposal ⁵.

• The mattress was already worn out or damaged enough that you were close to replacing it anyway. Our guide to when to replace a mattress covers the ordinary wear signs.

If it has to go, do it in a way that does not pass the problem to someone else:

• Bag or wrap it in plastic before it leaves the room, so bugs are not dislodged on the way out ⁹⁸.

• Mark or deface it clearly. Defacing an infested item discourages someone from picking it up and helps limit the spread ⁹.

• Check local rules, since requirements for wrapping, tagging, curbside pickup, and recycling vary. Our guide to disposing of a mattress covers the general options.

Replace the mattress only after the room has been treated. Otherwise the bugs still in the frame, headboard, and baseboards move straight into the new one ⁴⁹. Put encasements on the new mattress and foundation from day one, both to protect them and to make future checks quick ⁹.

When to Bring in a Professional

For most confirmed infestations, this is the right first call rather than a last resort. Minnesota Extension's position is that bed bugs are very difficult to control alone, that most people cannot do it, and that over-the-counter insecticides are not effective ⁴. Resistance is a large part of why. EPA notes that some bed bug populations have become resistant to pyrethrins and pyrethroids, the class most consumer products rely on ¹⁶, and the fogger study found field-collected bugs unaffected by products that a susceptible laboratory strain could not tolerate ¹².

A professional inspection is especially worth arranging when you keep finding signs but no insects, when evidence extends beyond the bedroom, when a mattress or upholstered furniture may need to be written off, or when someone in the home is very young, pregnant, elderly, or living with a respiratory or immune condition that makes pesticide exposure riskier. An effective professional plan usually combines inspection, containment, monitoring, physical controls such as heat and encasement, and carefully selected pesticides rather than any single tactic ⁶.

If you rent, or live in an apartment, dormitory, shelter, or other shared building, tell the landlord or property manager right away. Property management should be arranging the professional treatment, and adjacent units and shared spaces such as laundry rooms and lounges usually need inspecting too, because your unit may not be the only one affected ⁴. Sealing gaps around plumbing, wiring, and baseboards and fitting door sweeps reduces movement between units ¹³.

Who pays, what notice is required, and how quickly a landlord must respond vary by state, city, and building. Ask your local housing agency or public health department rather than assuming.

Keeping Them From Coming Back

Prevention here is mostly about the bed and what gets near it.

• Keep encasements on the mattress and foundation, and inspect them for damage. They also make an early infestation much easier to spot ⁴¹³.

• Leave interceptors under the bed legs as an ongoing monitor ⁴.

• Do not bring mattresses, box springs, bed frames, or upholstered furniture in from the street, and inspect anything secondhand or rented before it comes inside ⁴¹³.

• Keep bags, backpacks, and purses off beds and sofas ⁴.

• When travelling, keep luggage off the bed, check the mattress seams and the luggage rack, and inspect your suitcase before you leave. At home, dry the clothes you travelled with on the hottest setting the fabric tolerates, or keep them bagged until you can ⁴¹³.

• Reduce clutter near the bed, which cuts the number of hiding places and makes inspection faster ¹³.

Washing bedding on a schedule and routine mattress cleaning will not prevent bed bugs by themselves, and how clean a home is has nothing to do with whether they arrive. Bed bugs turn up in five-star hotels ².

Bites, Lost Sleep, and When to Get Medical Care

Bed bugs are not known to spread disease to people ². That is a genuine reassurance, and it is not the same as harmless. Bites can itch enough that scratching breaks the skin and leads to secondary infection, and CDC also lists insomnia and anxiety among the effects ². Serious allergic reactions are rare but possible, including enlarged and painful swellings and, very rarely, anaphylaxis ².

The distress is measurable. In a study of Montreal apartment tenants, people living with a bed bug infestation had higher odds of sleep disturbance (odds ratio 5.0, 95% confidence interval 1.3 to 18.8) and anxiety symptoms (odds ratio 4.8, 95% confidence interval 1.5 to 14.7) than unexposed neighbours, while depression scores trended higher without reaching statistical significance. It was a small cross-sectional study of 91 people using a convenience sample and self-reported questionnaires, so it cannot establish cause and effect, but it fits what clinicians and housing staff describe ¹⁸.

Most bites need nothing more than an antiseptic cream or lotion, avoiding scratching, and an antihistamine if the itching is bad ². Speak with a clinician about a large or worsening reaction, or about signs of infection such as increasing pain, warmth, swelling, pus, spreading redness, or fever. Get emergency help for trouble breathing, throat or tongue swelling, or fainting.

If the sleep loss and the anxiety are the worst part of this for you, say so to whoever is arranging the treatment and to your own clinician. It is a legitimate part of the problem, not a side note.