Bugs in Blankets: How to Find and Remove Them Safely

Bugs in blankets are most commonly bed bugs, clothes moths, or carpet beetles. Bed bugs leave rust-colored stains and bite marks on sheets; moths and beetles leave irregular holes or shed skins in the fabric itself. To remove them without spreading the infestation or damaging your bedding, isolate the blanket first, then wash it in hot water and dry it on high heat for at least 30 minutes to kill most species at any life stage. The sections below cover how to identify which pest you have and how to remove it.

Knowing which pest you have before you act matters. Each bug responds to different treatments, and using the wrong method wastes time and can spread the problem to other rooms.

What Kind of Bug Is in Your Blanket? A Quick Identification Guide

The fastest way to narrow down what you are dealing with is to look at three things: the bug itself, the damage it left behind, and any other evidence nearby. Bed bugs feed on blood and leave stains; fabric pests like clothes moths and carpet beetles feed on the fibers themselves and leave holes.

According to NC State Extension's 2021 report, juvenile clothes moths appear as small caterpillars, roughly ½ inch long. Carpet beetle larvae are similar in size but covered in bristly hairs and tend to be brown or banded. Bed bugs are flat, oval, and reddish-brown, roughly the size of an apple seed.

Very tiny bugs in bed that leave no holes but do leave small rust or dark spots are more likely bed bugs than fabric pests. Black bugs in blankets that are small and oval, especially near seams, point toward bed bugs or black carpet beetles. Tiny bugs on bed sheets that scatter when disturbed are often carpet beetle larvae.

Bug	Size and color	Damage pattern	Other evidence
Bed bug	4-5 mm, flat, reddish-brown	No holes; surface blood or fecal spots	Rust stains, shed skins, sweet musty odor
Clothes moth larva	~12 mm (½ inch), creamy white caterpillar	Irregular holes in wool, silk, or natural fibers	Silky tubes or cases woven into fabric
Carpet beetle larva	4-8 mm, brown, bristly	Surface grazing or holes along seams	Shed bristly skins, fecal pellets
Black carpet beetle	3-5 mm, shiny black adult	Larvae graze fibers, leaving thinned patches	Shed larval skins, fecal pellets near damage

If you see tiny bugs in bed that are not bed bugs, check whether your blanket is made from natural fibers like wool, down, or cotton. Clothes moths and carpet beetles strongly prefer natural materials. Synthetic blankets with no staining are unlikely to harbor fabric pests, though they can still carry bed bugs.

How to Inspect Your Blankets for Bed Bugs

A careful inspection tells you whether you have bed bugs before you spend money on treatment. According to CCOHS's 2026 report, a female bed bug can lay up to 400 eggs over an 18-month lifespan, giving an early-caught infestation far less ground to cover than one that has been active for months. For a full picture of how bed bugs develop from eggs through nymphs to adults, see the bed bug lifecycle guide on the Ace Bed Bug Exterminating NYC site.

Follow these steps in order:

1. Take the blanket off the bed and lay it flat on a hard, well-lit surface. A bright flashlight helps you spot dark fecal spots or pale eggs along seams.
2. Run a flat-edged card slowly along every seam, fold, and hem. Bed bugs and their eggs hide in tight creases where fabric layers meet.
3. Look for rust-colored or dark brown stains, which are dried blood or fecal matter. Also look for pale, translucent shed skins, which nymphs leave behind as they grow.
4. Check the label area and any decorative stitching. These are secondary hiding spots that are easy to miss.
5. Place the blanket into a sealed plastic bag immediately if you find evidence of bed bugs. This prevents any bugs from moving to other parts of the room while you decide on next steps.

You can also check for bed bugs in your broader sleeping area using a pair of simple tools. Bed bug interceptors are dish-like traps placed under each bed leg. They have a smooth inner moat that bed bugs cannot climb out of, so any bugs moving between the floor and the bed get caught. A bed bug proof mattress encasement is a six-sided zippered cover that traps any bugs already inside the mattress and blocks new ones from entering the seams. Per myhealth.alberta.ca, encasements must stay on for at least one year to ensure trapped bugs die.

How to Remove Bugs from Blankets: Step-by-Step

Heat and isolation are the two most reliable methods for removing bugs from blankets without spreading them. The exact temperature and time you need depends on the pest and the study you follow, so the steps below give you both figures where they differ.

Before you start, put on gloves. Handling an infested blanket with bare hands risks transferring eggs or larvae to your clothing.

1. Isolate the blanket. Seal it in a thick plastic bag as soon as you take it off the bed. Tie or zip the bag closed before carrying it to the laundry area. This stops bugs from dropping onto floors, furniture, or other bedding along the way [S2].

2. Launder in hot water and dry on high heat. Wash the blanket on the hottest setting the care label allows, then transfer it directly to the dryer. Run the dryer on the highest heat setting for at least 30 minutes [S3]. UMN Extension states that exposing bed bugs and their eggs to 118°F for 90 minutes is sufficient to kill them. A 2023 study in the International Journal of Environmental Health Research, testing 1,080 specimens, found that bed bugs hidden inside blankets specifically required 120 minutes at 60°C (140°F) to ensure they were killed. If your dryer reaches that temperature, extend the cycle to two hours to match the study conditions.

3. Freeze non-washable items. If the blanket's care label rules out machine washing, seal it in a plastic bag, press out as much air as possible, and place it in a freezer set to 0°F for at least three days [S4].

4. Steam non-washable items that cannot be frozen. A steam cleaner emits vapor at 100°C or higher and can reach bugs in fabric folds and seams. Move the nozzle slowly so the heat penetrates to the right depth. Note that excess moisture can encourage mold, so allow the blanket to dry fully before folding or storing it. Cornell IPM notes that fabric pests such as clothes moths can be killed by tumble-drying at 122°F for at least 5 minutes. That figure applies to fabric pests, not necessarily bed bugs, so use the higher time thresholds from UMN Extension or the 2023 study for any suspected bed bug infestation.

5. Vacuum the surrounding area. After removing the blanket, vacuum the bed frame, baseboards, and floor using a crevice tool [S5]. Seal the vacuum bag in a plastic bag and dispose of it outside immediately. Skipping this step leaves eggs and nymphs in the room that can reinfest a freshly cleaned blanket.

6. Store the cleaned blanket properly. Once the blanket is dry, place it directly into an airtight container or vacuum-sealed bag [S6]. Do not set it back on the bed until the room has been fully treated. A single wash cycle does not guarantee the infestation is gone if untreated hiding spots remain nearby.

Are Chemical Treatments and Mothballs Safe to Use on Blankets?

Most chemical treatments are not safe to apply directly to blankets or bedding, and mothballs are among the most hazardous options available. Mothballs release naphthalene or paradichlorobenzene as a vapor. Both chemicals are toxic to people and pets when inhaled or absorbed through the skin, and neither is registered for use on bedding or sleeping surfaces. Placing mothballs inside a blanket storage bin or under a mattress exposes anyone sleeping nearby to those fumes. The plan warnings for this article are clear: do not treat mothballs as a safe option for blankets.

Pesticide sprays marketed for bed bugs carry similar concerns when applied to fabric you sleep on. Residual sprays can absorb into fibers and remain in contact with your skin for hours each night. If you choose to use a registered pesticide spray in the room, apply it only to crevices, baseboards, and furniture joints, never directly to blankets, sheets, or pillowcases.

Safer alternatives exist for fabric pests specifically. Cedar blocks and lavender sachets are sometimes placed in drawers or storage bins to deter clothes moths and carpet beetles. These work as deterrents for stored items after cleaning, not as treatments for an active infestation. They have no meaningful effect on bed bugs.

Diatomaceous earth is a fine dust that dehydrates insects on contact. Per canada.ca, it should be applied to crevices or room perimeters, not to blankets or sleeping surfaces directly. It is a physical desiccant, not a registered pesticide for bed bugs on bedding, and applying it to fabric you sleep on creates a respiratory irritation risk.

If you are unsure which product is safe for your specific blanket material and pest type, contact your local cooperative extension office or a licensed pest control professional before applying anything chemical to your bedding.

How to Prevent Bugs from Returning to Your Blankets

Cleaning a blanket removes the bugs present at that moment. What keeps them from coming back is how you store and monitor the blanket afterward.

Follow these steps after every cleaning:

1. Store blankets in airtight containers or vacuum-sealed bags. Once a blanket is clean and fully dry, place it in a sealed container before putting it away [S6]. Open shelves and fabric bins give moths and beetles easy access to natural-fiber items.

2. Keep storage areas dry and cool. Clothes moths prefer warm, humid spaces. A cool, dry closet or under-bed storage box reduces the conditions they need to establish a new colony.

3. Place cedar blocks or lavender sachets in storage containers. These act as deterrents for clothes moths and carpet beetles in stored items after cleaning. They do not kill active infestations and have no effect on bed bugs, so use them only as a preventive measure once the blanket is confirmed clean.

4. Check stored blankets every 30 days. Pull each one out, shake it over a hard floor, and look for shed skins, fecal pellets, or holes. Catching a new infestation early is much cheaper than treating a large one.

5. Use pheromone traps near storage areas. Pheromone traps use specific scents to lure and capture adult male moths, letting you monitor whether moths are active in the area. Per npic.orst.edu, they capture only males and may attract non-target moth species if placed incorrectly, so follow the product directions closely.

6. Inspect secondhand blankets before bringing them inside. A single used blanket from a thrift store or storage unit can introduce fabric pests or bed bugs. Launder or freeze it before it touches your bed.

One important caveat for bed bugs specifically: because they can survive for approximately 300 days without a blood meal, a cleaned blanket can be reinfested if other hiding spots in the room, such as the mattress, box spring, or baseboards, are not treated at the same time. Storage measures protect the blanket; they do not address an active room infestation.

When Should You Call a Professional Bed Bug Exterminator in NYC?

DIY methods work well for fabric pests like clothes moths and carpet beetles, where a thorough wash and proper storage usually resolves the problem. Bed bugs are a different situation. Bed bugs can survive approximately 300 days without a blood meal, which means bugs hiding in wall voids, electrical outlets, or furniture joints can wait out a cleaning cycle and reinfest your bedding weeks later. A single wash or freeze does not guarantee eradication if untreated areas remain.

Call a professional when you see any of these signs:

• You find live bugs or fresh stains after laundering and drying your blankets on high heat.
• Bites or skin reactions continue appearing on multiple people in the same household.
• You spot shed skins, fecal spots, or eggs in more than one room.
• You have already treated the room once and the problem has returned.

For New York City residents, Ace Bed Bug Exterminating NYC is a bed-bug-only pest control service operating across all five New York City boroughs, Manhattan, Brooklyn, Queens, the Bronx, and Staten Island. Every inspection and treatment is focused on bed bugs, which means the technician is familiar with the full range of hiding spots and life stages specific to that pest.

The company performs on-site inspections and applies targeted biopesticide treatments, including the licensed product Aprehend, which is designed to work across the full bed bug lifecycle from eggs to nymphs to adults. That matters because a treatment that kills adults but leaves eggs behind will face a new generation of bugs within a few weeks. Post-treatment prevention guidance is also included, so you leave the appointment knowing exactly what to do to reduce the chance of reinfestation.

The service is available to residential renters, landlords, property managers, hotel operators, and office managers. If you manage multiple units in a building and one tenant reports bed bugs, a professional inspection of adjacent units is worth scheduling before the infestation spreads through shared walls. Canine bed bug inspections are another option for NYC properties where a visual sweep alone may miss early-stage infestations in hard-to-reach areas.

If you are unsure whether what you found in your blanket is a bed bug, the signs guide for NYC apartments walks through seven indicators you can check the same night.

Prices and plan limits verified as of October 2026.

FAQs

Do bed bug bites itch, and how do they differ from moth or beetle bites?

Bed bug bites commonly cause itching and redness, though reactions vary from person to person and some people show no visible response at all. Clothes moths and carpet beetles do not feed on human blood, so they do not bite in the same way. Skin irritation linked to moths or beetles usually comes from contact with larval hairs or shed skins rather than a feeding wound.

Can bed bugs live in washed blankets if the water temperature was too low?

Yes. Washing alone does not guarantee bed bugs are dead if the water temperature stays below the lethal threshold. UMN Extension states that 118°F held for 90 minutes is needed to kill bed bugs and their eggs. A 2023 study testing 1,080 specimens found that bugs inside blankets required 120 minutes at 60°C (140°F). Cold or warm wash cycles do not reach those temperatures, so the dryer cycle on high heat is the critical step, not the wash itself.

How long do I need to freeze a blanket to kill bugs and their eggs?

Seal the blanket in a plastic bag and place it in a freezer set to 0°F for at least three days [S4]. Shorter periods or warmer freezer temperatures may not kill all life stages. Household freezers vary, so confirm your freezer actually reaches 0°F with a thermometer before relying on this method.

Can I use a steam cleaner on all types of blankets without damaging the fabric?

No. A steam cleaner emits vapor at 100°C or higher, which can shrink, distort, or damage delicate fabrics like silk, some wools, and loosely woven materials. Always check the blanket's care label before applying steam. Move the nozzle slowly to let heat penetrate, and allow the blanket to dry completely before folding it, since excess moisture can encourage mold.

What does a bed bug egg look like on a blanket?

Bed bug eggs are tiny, roughly 1 mm long, and pearl-white in color. They are often found in clusters along seams, folds, or stitching where fabric layers overlap. They can be difficult to spot without a flashlight and a magnifying glass. A flat-edged card dragged slowly along seams may dislodge eggs and make them easier to see against a hard surface.

Conclusion

Bugs in blankets fall into two broad categories: blood feeders like bed bugs, and fabric feeders like clothes moths and carpet beetles. Identifying which one you have by its damage pattern, not just its appearance, tells you which removal method to use. Heat treatment through laundering and drying on high heat is the most reliable first step for most blanket types, but a single cycle is not a guarantee if other hiding spots in the room go untreated.

Check your blanket's care label before washing or steaming, store clean blankets in sealed containers, and monitor for new activity every month. If you find fresh evidence of bed bugs after cleaning, or if the problem spans more than one room, that is the point to bring in a professional rather than repeat the same DIY steps.