The number that matters
Pacific Northwest Extension’s bed bug manual puts it plainly: “Items must reach a temperature of 50ºC (122ºF) for at least four hours to kill all stages of bed bugs.” That sentence is about a heat chamber for belongings, and it is the only Oregon extension figure in print — but the biology does not change when the chamber is a bedroom. The peer-reviewed heat study behind the industry (Kells & Goblirsch, 2011) found adults die at 48.3°C and eggs need 54.8°C for a near-instant kill, with eggs surviving seven hours at 45°C. Eggs are the problem; the hold time is the solution.
What a treatment day looks like
- Morning setup. Propane or electric heaters placed, ducting run, fans positioned so air moves through closets, under beds, into drawers.
- Ramp. Rooms climb past 120°F. Wireless probes sit inside the mattress seam, the box-spring corner, the sofa frame, behind the headboard — the places air reaches last.
- Hold. We do not watch the room thermometer. We watch the coldest probe, and the clock does not start until it crosses the line.
- Rotation. Furniture turned, cushions flipped, drawers opened mid-hold so no face stays cool.
- Residual. A desiccant dust in the voids afterward, so anything missed walks through it.
- Report. The probe log and a photo set. Keep it: it is what a landlord or a Salem inspector will ask for.
What you do
Less than you think. Remove what heat damages — candles, aerosols, medications, instruments, houseplants, pets — and leave the rest. Heat needs the clutter to stay where the bugs are. The short list →
When heat is the wrong buy
A single room caught early in an apartment, a unit the neighbors are also treating by chemical, a very cluttered home where airflow cannot be guaranteed. We will say so. OSU’s own guidance is that professional plans “involve a combination of heat, freezing, spot treatment pesticide applications” — not one tool.