The numbers
Virginia Cooperative Extension’s 2024 heat-treatment guide: “the thermal death point for bed bug adults and nymphs is 118° F ... but the thermal death point for bed bug eggs is 122° F,” and therefore “these cracks and crevices must reach 122° F for the heat treatment to be effective.” The peer-reviewed study behind the industry (Kells & Goblirsch, 2011) puts the 99% lethal point for eggs at 54.8°C (130.6°F) for a fast kill, with eggs surviving seven hours at 113°F. Eggs are the job.
Why the room reading misleads
The same guide: “Many heat treatment technicians aim to get the ambient temperature up to 135° F and then leave the heaters in place for four to five hours,” and then, in italics in the original, that the ambient temperature “is not relevant!” A mattress seam at 112°F in a 135°F room is an infestation that survives.
Treatment day
- Setup. Heaters and ducting; air movers aimed into closets, under beds, behind dressers.
- Probes. Wireless sensors in the mattress seam, the box-spring corner, the sofa frame, the nightstand drawer, the baseboard gap.
- Ramp and hold. The hold is timed from the coldest probe crossing 122°F, and it runs long enough for eggs.
- Rotation. Cushions flipped, drawers opened, furniture turned mid-hold.
- Residual. The guide’s supplement: “ask your (certified pest management) technician to apply a residual insecticide after the heat treatment is completed” — a desiccant dust in the voids.
- Log and follow-up. The probe log, photos, and the follow-up inspection date.
Why a certified company, not a heater rental
Virginia Tech: “it is best to hire a certified pest management company to conduct bed bug heat treatments rather than a heat treatment company that cannot legally apply pesticides,” because the residual step needs a licence. OSU’s 2025 factsheet: make sure the company is “licensed by the Ohio Department of Agriculture.”
Prep
Less than you think. The guide’s view is that “minimal preparation is becoming the new standard for heat treatments” and that “clutter removal should not be required.” The short list →