Can Bed Bugs Die in the Washer? Facts on Washing and Drying to Kill Bed Bugs

Key Takeaways

• Washing clothes and fabrics at 60°C (140°F) or higher, followed by drying on high heat, can kill bed bugs at all life stages.
• Lower-temperature washes may not kill bugs or eggs; combining heat with thorough drying and inspection improves results.
• Laundry is one part of an overall bed bug strategy that should include inspection, targeted treatments, and follow-up.

Can Bed Bugs Die in the Washer? Answering the Core Question

Bed bugs can die in the washer when exposure to sufficiently high temperatures overwhelms their ability to survive. However, simply placing infested items in a cold or lukewarm wash is unlikely to eliminate them. Effective laundry control depends on achieving lethal temperatures, maintaining those conditions for a sufficient time, and following safe handling practices. Understanding how heat affects bed bugs, which fabrics can be washed, and how to pair washing with drying and follow-up actions helps you use the washer as a reliable tool in bed bug management.

How Heat Kills Bed Bugs: The Science Behind Washing and Drying

Temperature is the decisive factor in killing bed bugs in the laundry. Heat disrupts essential proteins and cellular functions, leading to mortality. Both lethal temperature thresholds and the duration of exposure matter, as do the physiological states of the bugs (mobile adults, nymphs, or protected eggs). Moisture during washing and the hot, moving air during drying also influence how quickly and reliably bed bugs and their eggs die.

Lethal Temperature and Time for Bed Bugs

Research indicates that adult bed bugs die at or above approximately 45°C (113°F) when exposed continuously. Eggs are more heat-resistant and generally require temperatures of 50°C (122°F) or higher for a sustained period to achieve mortality. Drying cycles in residential dryers often reach above 60°C (140°F) and can kill all life stages within 30 to 60 minutes of continuous high-heat drying. Washer cycles that reach 60°C (140°F) or higher can also be effective, provided items stay wet long enough to reach uniform temperature throughout.

Note: These values reflect commonly cited research thresholds; exact times and temperatures can vary with insect population, prior acclimation, and measurement conditions. Achieving and maintaining these temperatures in washers and dryers is the practical challenge.

Washing Bed Bug-Infested Items: What Works and What Doesn’t

Not all fabrics can handle hot water, and not all washing routines automatically kill bed bugs. Sorting items by care labels, selecting the hottest water suitable for the fabric, and ensuring thorough agitation and soaking all influence outcomes. Combining washing with later heat drying is usually more reliable than relying on wash alone.

Best Practices for Laundry to Target Bed Bugs

• Sort and inspect: Separate clothes, bedding, and fabrics; check pockets and seams for bugs before loading.
• Use the hottest acceptable water: Choose a temperature allowed by fabric care labels that reaches at least 60°C (140°F); longer cycles help ensure uniform heating.
• Add detergent: Detergent aids cleaning but is not a reliable sole treatment; heat remains the key lethal factor.
• Agitation and soaking time: Ensure items are fully immersed and agitated; a pre-wet soak can help temperature penetrate thick items.
• Transfer to dryer: Move items promptly to a hot dryer; drying heat is often more reliable than washer heat for killing eggs.

Drying as a Critical Step: Can It Finish the Job the Washer Misses?

Drying is often more effective than washing alone because it generates higher, more consistent temperatures and delivers lethal heat throughout the thickness of fabrics. The moving air and elevated temperature in a dryer can penetrate folds, seams, and bulky items better than a washer. For items that cannot be washed, or when eggs are a concern, drying at high heat can be a central control method.

Optimizing Drying for Bed Bug Control

• Use high heat: Set the dryer to a high-heat or regular cycle; confirm the machine reaches above 60°C (140°F) with a dryer thermometer if uncertain.
• Dry thoroughly: Continue drying for at least 30–60 minutes of continuous high heat; longer times increase confidence for eggs.
• Check for clumping: Shake and fluff items mid-cycle to prevent cool pockets and ensure even heat exposure.
• Cool-down handling: Let items cool in the dryer or move directly to storage or inspection to avoid reinfestation from surviving bugs.

What You Can and Cannot Machine-Wash

The success of washing depends on fabric tolerance for heat and agitation. Machine-washable items generally include cottons, synthetics, and many blends when handled at appropriate temperatures. Delicate fabrics, such as wool, silk, or items labeled dry-clean-only, may require special care or professional cleaning that still incorporates heat-based treatments.

Practical Laundry Protocol for Bed Bug Management

A structured, repeatable protocol improves reliability when using washers and dryers against bed bugs. It combines preparation, heat-based treatment, careful handling, and follow-up inspection to reduce the chance of missed bugs or reinfestation. Integrating the laundry protocol into a broader pest management plan increases overall effectiveness.

Step-by-Step Laundry Protocol

1. Prepare: Inspect items, remove bugs and loose eggs by brushing or vacuuming with a HEPA-secured vacuum, and seal items in bags for transport to the laundry area.
2. Sort and load: Group items by fabric type and heat tolerance; avoid overloading so water and heat can penetrate evenly.
3. Wash: Use the hottest water allowed by fabric care labels (aim for at least 60°C/140°F); run a full cycle with adequate detergent and agitation.
4. Inspect and transfer: Quickly check items as they exit the washer; transfer immediately to the dryer to avoid recontamination or cooling.
5. Dry: Use high heat for at least 30–60 minutes; remove items promptly and inspect for any remaining signs of bed bugs.
6. Post-treatment: Place cleaned items in protective covers if desired, store away from infested areas, and continue broader bed bug control measures as needed.

Limitations, Risks, and Complementary Tactics

Washing and drying are powerful tools but have limits. Not everything can be washed or dried at lethal temperatures, and some items may retain bugs or eggs if not properly handled. Incomplete penetration, cool spots, and reinfestation from untreated areas can reduce success. Combining laundry with other methods—such as targeted insecticide applications, heat treatments for rooms and furniture, and thorough inspections—creates a more dependable outcome.

Complement Laundry with These Tactics

• Room heat treatments: Raising indoor temperatures to 50–55°C (122–131°F) for several hours can reduce populations in spaces and items that cannot be laundered.
• Encasements: Use bed bug-proof mattress and box spring encasements to trap and monitor bugs and to protect treated items.
• Vacuuming and steam: Careful vacuuming of floors, baseboards, and cracks, along with targeted steaming of seams, can remove survivors.
• Professional support: For widespread or persistent infestations, consult a pest management professional for integrated treatments.