Bed Bugs in Laundry: What Actually Kills Them?

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If you’ve ever found a bed bug, or even suspected you found one, laundry suddenly becomes this whole weird science experiment.

You’re standing there holding a hoodie like it’s contaminated. Wondering if you should wash it twice. Or burn it. Or just move.

And yeah, laundry can absolutely help. Done right, it’s one of the easiest ways to kill bed bugs on clothing, bedding, towels, kids stuffed animals, all of that.

But there’s a catch. Bed bugs do not die because you “washed them.” They die because of heat. And if the heat part doesn’t happen, they can survive your laundry routine and you end up carrying them right back into your bedroom.

So let’s talk about what actually kills them. What doesn’t. And how to do laundry in a way that’s not just busy work.

Quick reality check: bed bugs and laundry

Bed bugs hide in seams, folds, and fabric edges. They also lay eggs that are sticky and annoyingly resilient.

Laundry helps because:

  • Fabrics can be moved and isolated fast
  • Most people already have a washer and dryer
  • High heat can kill all life stages if it’s hot enough and long enough

Laundry does not help much when:

  • The infestation is in furniture, baseboards, bed frame cracks, behind outlets
  • You’re washing but not drying hot
  • You’re moving laundry around the house unbagged and dropping hitchhikers everywhere

Basically, laundry is a tool. It’s not the whole solution. For instance, research shows that while laundry can assist in controlling bed bug populations, it’s crucial to apply the right techniques for maximum effectiveness.

What actually kills bed bugs in laundry?

1) The dryer. Specifically, the heat

This is the big one.

A hot dryer is usually the most reliable bed bug killer you have at home because it gets hot enough to kill:

  • adults
  • nymphs
  • eggs

The washer is helpful. The dryer is the finisher.

If you’re only going to do one thing, do this: run items in a hot dryer long enough.

What setting? High heat, if the fabric can handle it.
How long? People want a single magic number, but here’s the practical version:

  • Run the dryer on high heat for at least 30 minutes after the load is fully hot.

That “after it’s fully hot” part matters. A dryer needs time to warm the items all the way through, especially bulky stuff like comforters, hoodies, towels, and jeans.

If you toss a cold, wet comforter in and set a 30 minute cycle, the inside may spend a lot of that time warming up and tumbling damp, not actually reaching lethal temps long enough.

So yeah. Use enough time.

If you’re dealing with “dry clean only” or delicates, you can still sometimes use the dryer safely if you:

  • put items in a mesh bag
  • use a lower heat setting but extend time
  • test one item first

But be careful. I’m not going to tell you to melt your wardrobe.

2) Washing helps, but it’s not the main kill step

A lot of people assume hot water kills them. Sometimes it can, but it’s not as consistent as you’d think because:

  • some washers don’t actually hold “hot” water very hot
  • water cools quickly during the wash
  • eggs can survive if temps don’t stay high enough

Washing is still worth doing because it removes allergens, fecal spotting, and general grossness. And it knocks bugs off fabrics. But the dryer is what reliably finishes the job.

If you can wash hot, do it. If you can’t, wash warm or cold, then dry hot. That’s still a good process.

3) Detergent does not kill bed bugs in any dependable way

This is one of those myths that won’t die.

Regular detergent is designed for oils, stains, odors. Not insects. It might kill some bugs by drowning or agitation, but it’s not something you should bet your whole situation on.

Same story with “extra detergent.” Same story with “natural detergent.”

4) Bleach, borax, vinegar, essential oils… not your answer here

People try everything. I get it.

But in a laundry context, these are the problems:

  • You’re risking fabric damage and fumes
  • You still need heat to make it reliable
  • Eggs are the issue, and most DIY additives don’t solve that consistently

So sure, if you already use bleach on white bedding, fine. But don’t treat additives like they replace the dryer.

5) Dry cleaning can kill them, but it’s not always necessary

Professional dry cleaning can be effective because of the heat and solvents involved. But if the item can be dried on high heat at home, that’s often simpler and faster.

If you do take things to a cleaner:

  • transport items sealed in bags
  • tell them you’re dealing with bed bugs (awkward, but better than spreading them)
  • keep cleaned items sealed until your home is treated

The simplest bed bug laundry routine that actually works

This is the version that holds up in real homes, not the perfect lab scenario.

Step 1: Bag everything before you move it

Before you carry bedding through the hallway, bag it.

Use:

  • plastic trash bags, contractor bags, or large dissolvable laundry bags
  • twist tie or knot it tight

This prevents you from dropping bugs along the route from bedroom to laundry area.

And yes, it’s annoying. But it’s way less annoying than chasing new bed bug hotspots because you carried an unbagged blanket across the couch.

Step 2: Dump straight into the washer

Open the bag carefully at the washer.

Tip the items straight in. Do not set them on the floor. Do not pile them on the counter “for a second.”

Then immediately tie up the empty bag and throw it out in an outside trash bin if you can.

Step 3: Wash (any temp you can), then dry on high heat

  • Wash in hot water if the fabric allows
  • If not, wash in warm or cold
  • Then move directly to the dryer
  • Dry on high heat with enough time

If you’re unsure about timing, go longer.

Step 4: Store clean items in clean bags or bins

This is the step people skip. And then they wonder why it feels like nothing changed.

If you dry something and then fold it on the bed… and your bed still has bed bugs… you just gave them fresh fabric.

So:

  • take clean, dry items straight into new bags or sealed bins
  • keep them isolated until treatment is complete
  • only put items back into drawers after the room is cleared

It feels excessive until you’ve lived the alternative.

What about “clean clothes” that were in the same room?

Treat anything that sat in the infested bedroom as suspect.

That includes “clean” clothes in an open hamper, on a chair, in a pile, on the floor, half on half off the bed.

The safest approach is to:

  • dry clean-looking items on high heat if the fabric can handle it
  • or seal them until you can treat them correctly

If you’re overwhelmed, prioritize:

  1. bedding and pillowcases
  2. clothes worn to bed
  3. towels and blankets
  4. anything stored under the bed or near the bed

Stuff you can’t wash (shoes, bags, delicate items)

A dryer can still help for some non washable items, but not all.

Some options:

  • Dryer heat for items that can safely tumble (some shoes, some backpacks, some plush items)
  • Sealed storage if you can’t heat treat (this takes time and space)
  • Professional heat treatment in the room (often the most practical if you’re already at that point)

Be cautious with things like:

  • leather
  • glued shoes
  • items with foam that can warp
  • electronics (do not put these in a dryer, obviously)

If you’re in Waukesha County and you’re not sure what’s safe to heat, this is the kind of question a local bed bug pro can answer quickly during a consult.

Common laundry mistakes that keep bed bugs alive

Mistake 1: Skipping the dryer or using low heat

Air drying does not kill bed bugs. Neither does a gentle tumble on low.

If you washed and then hung everything to dry, you basically did the least useful part and skipped the kill step.

Mistake 2: Overstuffing the dryer

A packed dryer doesn’t circulate heat well. You want items tumbling freely so heat reaches seams and folds.

Do smaller loads. It’s more cycles, yes. But it works.

Mistake 3: Carrying unbagged laundry through the house

This spreads them.

You only need to drop one bug in the hallway. Now you’re playing a longer game.

Mistake 4: Putting clean laundry back into an infested room too soon

This is the emotional rollercoaster part. You feel productive. You did ten loads. Everything smells fresh.

Then you put it back into the same environment that still has bed bugs.

If the infestation hasn’t been professionally treated yet, keep clean items sealed.

Mistake 5: Thinking laundry alone solves the infestation

Laundry reduces the population and stops you from transporting bugs on clothing.

But it does not remove them from:

  • mattress seams
  • bed frames
  • headboards
  • nightstands
  • baseboards
  • outlet plates
  • wall voids

Which is why a lot of people do laundry for two straight weekends and still wake up with bites.

Do you need to wash everything you own?

No. Please don’t do that to yourself unless you truly have to.

Focus on fabrics that matter:

  • anything that touches the bed
  • anything stored close to the bed
  • clothes you wear often
  • anything that could be transporting bugs to other rooms

You do not need to wash every winter coat in July. Bag it and deal with it strategically.

When laundry isn’t enough (and what to do next)

If you are actively seeing bed bugs, or getting new bites, or finding fecal spotting, or seeing shed skins, laundry is just step one.

You need to treat the room, usually the whole home depending on spread.

At that point, the best move is a real inspection so you know:

If you’re in Waukesha County, Bed Bug Exterminator Waukesha (bedbugexterminatorwaukesha.com) offers fast scheduling and discreet service, and they can usually tell you on a quick phone consultation what your laundry and prep plan should look like before they arrive. That matters because doing prep wrong can slow everything down.

A simple checklist you can screenshot

The bottom line

Bed bugs in laundry are not complicated once you accept the one boring truth.

Heat kills them. The dryer is the hero.

Wash if you want, wash if you need to, wash because it’s hygienic. But if you want to actually kill bed bugs and eggs on fabrics, focus on a hot dryer cycle done correctly, plus careful bagging so you don’t spread them around your house.

And if you’re doing all that and still seeing signs, it’s probably time to stop fighting blind and get a professional inspection. The faster you confirm what’s going on, the faster you stop doing endless laundry like it’s a second job.

FAQs (Frequently Asked Questions)

Can washing clothes alone kill bed bugs effectively?

Washing clothes alone does not reliably kill bed bugs because water temperature may not stay hot enough long enough to kill all life stages, especially eggs. While washing helps remove allergens and bugs from fabric, it is the heat from the dryer that actually kills bed bugs.

What is the most effective laundry method to kill bed bugs?

The most effective method is running infested items in a dryer on high heat for at least 30 minutes after the load is fully heated. This sustained high temperature kills adult bed bugs, nymphs, and eggs. The dryer acts as the finishing step to reliably eliminate bed bugs from clothing and bedding.

Do detergents or additives like bleach and essential oils kill bed bugs during laundry?

Regular detergents and additives such as bleach, borax, vinegar, or essential oils do not reliably kill bed bugs. These substances are designed for cleaning fabrics but do not consistently eliminate all life stages of bed bugs, especially eggs. Heat remains the critical factor for killing them.

How should I handle laundry to prevent spreading bed bugs in my home?

Before transporting infested bedding or clothing through your home, bag everything securely in plastic trash bags or dissolvable laundry bags with tight knots or twist ties. This prevents dropping hitchhiking bed bugs along hallways or other areas, reducing the risk of spreading infestation.

Is dry cleaning a necessary step for killing bed bugs on clothes?

Dry cleaning can kill bed bugs due to heat and solvents involved but is not always necessary if you can safely use a home dryer on high heat. If you choose dry cleaning, transport items sealed in bags and inform the cleaner about the infestation to avoid spreading.

Why is drying on high heat more important than washing when dealing with bed bugs?

Drying on high heat is crucial because it maintains lethal temperatures long enough to kill all stages of bed bugs including resilient eggs. Washing may reduce some bugs but often doesn’t sustain high enough temperatures throughout the entire cycle. The dryer’s heat finish ensures complete eradication.

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