How heat treatment works

A crew seals the treatment area, brings in electric or propane heaters and fans, and raises the whole space past the lethal threshold. The science is well established: bed bugs and their eggs die within 90 minutes at 118°F and almost immediately at 122°F. Because eggs tolerate heat better than adults, professional jobs push room temperatures well past that (local crews advertise holding 140–160°F for three hours or more) and use sensors to find cool spots inside closets, wall corners, and furniture.

A whole-home heat job typically runs six to eight hours, so the infestation is gone the same day. There's no pesticide residue, and you don't have to bag up your life or throw out the mattress. Heat treats your belongings where they sit. In Springfield, whole-home heat for a small house runs around $1,600, priced by square footage.

Where heat can fail

• Cool spots. If the crew doesn't monitor temperatures inside dense furniture and wall voids, bugs survive in the cold pockets. Ask how they verify lethal temperature throughout, not just at the thermostat.
• No residual protection. Heat kills what's there the day of treatment. Bring bed bugs home from a trip the next week and you start over. Many companies pair heat with a light residual application for this reason.
• Re-introduction from next door. In apartments, heat-treating one unit doesn't help if the neighboring unit is infested. More on that on our apartments page.

How chemical treatment works

A licensed applicator treats cracks, crevices, bed frames, baseboards, and furniture with EPA-registered insecticides. The EPA lists seven chemical classes registered for bed bugs (pyrethrins, pyrethroids, desiccants, biochemicals, pyrroles, neonicotinoids, and insect growth regulators), and a competent company rotates among them deliberately.

That rotation matters because resistance is real, not a sales line: Rutgers researchers report that the majority of field bed bug populations are now resistant to pyrethroids, the class in most consumer sprays. It's also why chemical treatment is never one-and-done. Insecticides don't reliably kill eggs, so the standard protocol is two to three visits spaced a couple of weeks apart to catch nymphs as they hatch. Locally, published bed bug treatment prices run $287–$669, though the price list doesn't say which method that buys. Whatever you're quoted, reputable companies build the follow-up visits into the price.

Where chemical can fail

• Skipped follow-ups. A single cheap visit kills the adults you saw and leaves the eggs you didn't. If a quote doesn't include return visits, it isn't a complete treatment.
• Resistant populations. If the bugs shrug off the first product, the fix is switching chemical class. Ask whether the company rotates modes of action.
• Prep matters more. Chemical treatment only reaches bugs where products are applied, so decluttering and laundering (see our prep checklist) does real work.

Side by side

Heat vs. chemical at a glance

Factor	Whole-home heat	Chemical
Timeline	One day (6–8 hours on site)	2–3 visits over 2–6 weeks
Kills eggs	Yes, when lethal temps are verified throughout	Unreliably; follow-up visits catch hatchlings
Springfield pricing	≈$1,600 for a small home, by square footage	No method-specific local price published; the local $287–$669 list doesn't say which method it covers
Residue	None	Residual product keeps working between visits
Best fit	Heavy or widespread infestations, cluttered homes, need it gone now	Light, caught-early infestations on a budget

Plenty of Springfield jobs end up as a hybrid: heat to knock the infestation out in a day, plus a residual chemical barrier so a straggler or a re-introduced hitchhiker doesn't restart it. Full numbers, including national benchmarks, are in the cost guide.

Leave the application to a licensed pro

Missouri licenses commercial structural pest control (Category 7A) through the Department of Agriculture, and the DIY route has a grim local history. In 2016, a Springfield man died in a house fire on North Golden Avenue after treating for bed bugs himself; the fire marshal said the chemical he'd applied acted as an accelerant when it met a flame. Foggers are the other trap: the mist never reaches the cracks where bugs hide, which is why Rutgers researchers found them completely ineffective against bed bugs and the EPA says they should not be used as the sole source of bed bug control. The propellant is also an explosion risk near pilot lights. Your side of the job is preparation: laundering and decluttering so the home is treatable. The application belongs with a licensed applicator.

Sources

• University of Minnesota Extension, Bed bug control — 118°F/90 min, 122°F immediate; 6–8 hour treatments; 2–3 PMP visits.
• Kells & Goblirsch (2011), Insects 2(3) — eggs are the most heat-tolerant stage.
• EPA, Pesticides to control bed bugs — seven chemical classes; documented pyrethroid resistance.
• Rutgers NJAES, FS1251 — "the majority of the field bed bug populations are resistant to pyrethroids"; foggers "are completely ineffective against bed bugs."
• EPA, Should I use a fogger? — foggers "should not be used as the sole source of bed bug control"; explosion precautions.
• KY3, 2016 report — fatal Springfield house fire after DIY bed bug treatment.
• Local pricing: Pest Extinct Springfield price list ($287–$669); Bug Zero (≈$1,600 small-home heat example); SWMO Bed Bugs (140–160°F held 3+ hours).