Bed Bug Heat vs Chemical Treatment

This guide is for the moment after you have confirmed bed bugs and someone has quoted you a heat job, a spray plan, or both. It covers what each method does, the temperatures that matter, where fumigation fits, and how long until you can sleep in the bed. If you have not confirmed bed bugs yet, start with our bed bug treatment page.

What kills 100 percent of bed bugs?

No method does that reliably on its own, because every one has a gap. Heat kills eggs and adults alike, but only where the heat actually reaches. Insecticides keep working for weeks, but many products do not kill eggs, and Ohio State University Extension says overuse of pyrethroids has produced highly resistant bed bug strains. Virginia Tech entomologists who test heat systems put it plainly in their 2024 fact sheet: you cannot expect even a well-run heat treatment to work every single time.

So the honest goal is a plan that closes the gaps. That means heat or a product that reaches the hiding spots, a second method for what the first one misses, and an inspection afterward to prove the bugs are gone. A company that promises one visit and done, with no follow-up, is selling you the easy half of the job.

If you want a licensed company to look and put its plan in writing, ask for an inspection first.

The temperatures that matter

The numbers you will see vary, so here is where they come from.

Source	What it says
EPA top ten tips	Bed bugs die at 113F, with specialized heat treatment
Virginia Tech, ENTO-583NP	Adults and nymphs die at 118F, eggs at 122F; at 112F to 115F they survive for hours
Virginia Tech, ENTO-583NP	Many crews aim for 135F room air and hold it four to five hours
NPIC	A clothes dryer on high heat for 30 minutes kills all stages, eggs included
EPA do-it-yourself page	Cold works only at 0F, held for three days in a sealed bag

The figure that matters is the one inside the cracks. Virginia Tech is blunt that the air temperature in the room is not relevant, because bed bugs are not floating in the air. They are under baseboards and in floor-wall junctions, inside stacked clothes, and in the floor of a utility closet. In the Virginia Tech study, some of those spots never reached a lethal temperature during a normal four to five hour treatment unless the technician kept measuring and moving the heaters and fans.

That is why I would only pay for heat from a crew that places temperature sensors in the hard-to-heat spots and shows you the readings. Virginia Tech goes further and suggests being home during the treatment so you can see whether the technician checks the sensors.

Heat treatment: strengths and gaps

What heat does well:

• It kills eggs, which many sprays do not.
• It works on resistant populations, because resistance to an insecticide does nothing against heat.
• It can treat a room in one long day.
• Bedding and clothes left in the room get heated along with everything else.

Where it falls short:

• It leaves nothing behind. A bug that survived in a cool corner, or one carried back in on a bag, meets no resistance the next week.
• Clutter holds cool air. Virginia Tech found that a room full of stuff slows heating and can protect the bugs inside it.
• Heat-sensitive items have to come out first. The company's prep sheet will list them.
• It costs more up front. This Old House lists $400 to $5,500 for heat as a national range, updated June 2026.

Virginia Tech's fix for the first gap is a residual application after the heat, usually a desiccant dust placed in the spots that were hard to heat. A desiccant kills by drying the bug out, so it keeps working after the crew leaves. In Ohio, applying any pesticide on your property for hire requires a commercial applicator license (ORC 921.06), so ask whether the heat crew includes a licensed applicator or whether a separate visit handles the residual.

Chemical treatment: strengths and gaps

EPA lists several classes of products registered for bed bugs on its pesticides page:

• Pyrethrins and pyrethroids
• Desiccants, such as diatomaceous earth
• Pyrroles, such as chlorfenapyr
• Neonicotinoids
• Insect growth regulators
• Biochemicals, such as cold pressed neem oil

A good chemical plan uses more than one of these, because resistance to one class does not carry over to the others. The technician treats mattress seams and bed frame joints first, then baseboard cracks and furniture. The National Pesticide Information Center notes that many insecticides do not kill eggs, so a second treatment is often needed after the eggs hatch. OSU adds that desiccant dusts work slowly, sometimes over weeks.

The strengths are price and staying power. This Old House lists $150 to $400 per room for insecticide treatment. The products keep killing bugs that walk across them. The gaps are eggs and resistance, plus time. EPA says chemical control can take weeks to months, depending on how far the infestation has spread.

My view: for one bedroom caught early, a chemical plan with two or three visits is often enough. For bugs in more than one room, or on the couch as well as the bed, I would price heat plus a residual.

Where fumigation fits

Structural fumigation fills a building with a gas, usually sulfuryl fluoride, under a tarp or tent. The NPIC fumigation page lists bed bugs and drywood termites as pests it is used against, and notes that heat is the only other whole-structure option. Sulfuryl fluoride is a restricted use pesticide, so only certified applicators can use it. In Ohio, fumigation is its own license category (10c).

For a Columbus house or apartment it is an uncommon choice. Everyone in the household has to leave with the pets and houseplants, and food gets bagged or removed. In a double or an apartment building, tenting your unit alone is not practical. This Old House puts fumigation at $2,000 and up. If a company leads with fumigation for a single bedroom, ask why heat or a chemical plan would not do.

Foggers and do-it-yourself heat

I would not fog for bed bugs. OSU says total-release foggers do not reach the places bed bugs hide and generally do not kill them even on direct contact. EPA says foggers should not be the sole method, and warns that using more than your space needs can cause an explosion. Store-bought sprays used every day are not much better. NPIC warns that daily spot treatments can increase resistance and push bugs into new rooms.

Home heat is limited too. EPA says turning up the thermostat or running a space heater to cook out bed bugs does not work and is dangerous. The dryer is the home heat tool that does work, for anything that can go in it.

If you are not sure what you found, a clear photo is a cheap first step before anyone sprays anything.

Can I sleep in my bed after treatment?

The answer changes with the method.

• After fumigation, nobody goes back in until the applicator has aired the building out and measured sulfuryl fluoride at or below EPA's limit of 1 part per million, per NPIC. The applicator tells you when. Do not decide that yourself.
• After heat, you can go back once the crew has finished and the rooms have cooled. Heat leaves no chemical residue of its own. A residual dust applied afterward has its own label directions.
• After a spray, the product label sets the re-entry time, and the label is the law. Ask the technician which products were used and what each label says about re-entry and treated mattresses. Write it down.

Once you are cleared to go back in, sleep in your own bed. Moving to the couch hands the bugs a second place to live. NPIC recommends making the bed a "bug-free island": interceptor cups under the legs, the bed pulled away from the wall, sheets off the floor, and mattress encasements zipped shut. EPA says to leave the encasements on for a year.

How to judge a quote

Ask for a written price before any treatment, and check it for these:

1. Which method, in which rooms, and why that method for your infestation.
2. For heat: how many sensors, where they go, and whether you get the temperature readings afterward.
3. Whether a residual product goes down after heat, and in which spots.
4. For chemical plans: how many visits are included and how far apart they are.
5. Whether a follow-up inspection is included. This Old House puts follow-ups at $100 to $150 a visit when they are extra.
6. What the prep sheet asks of you, and what happens if prep is incomplete.
7. For renters: whether neighboring units will be inspected.

Two quotes on the same plan make price differences easy to read. Our quote checklist and Columbus cost guide help with that. Check the company's Ohio license with our license lookup guide, and if you rent, read who pays for treatment before you pay anything yourself.

We only refer companies that hold an Ohio Department of Agriculture pesticide business license and send licensed commercial applicators. If you want one to inspect and put a plan in writing, start here.