Questions to ask your exterminator before bed bug treatment
Hiring an exterminator without asking the right questions is one of the most common mistakes homeowners make. The right questions protect your wallet, set realistic expectations, and help you tell a professional from someone just looking for a quick job.
What preparation do I need to do?
Preparation is step zero — and it matters more than most people realize. What a company asks of you before treatment tells you a lot about how they operate. Some companies hand over a multi-page checklist that can feel overwhelming; others keep it intentionally lean.
At a minimum, you should expect to strip your bed of all bedding, bed skirts, and pillow covers and run them through a wash and dryer cycle on high heat. Heat is one of the most effective ways to kill bed bugs and their eggs at every life stage, so this step isn’t optional — it’s essential.
Beyond bedding, you’ll generally want to tidy up clutter around the bed frame, nightstands, and baseboards so the technician can access those key areas without obstacles. Some companies go further and ask you to bag items, move furniture, or vacate for extended periods — so always ask upfront exactly what’s expected of you and how long before you need it done.
Wash and dry everything on the highest heat setting
Clear clutter from around the bed, baseboards, and nightstands
Ask whether you and pets need to vacate — and for how long
Confirm the full prep list in writing before treatment day
A shorter prep list isn’t a sign of a lazier company — it often reflects a more refined treatment approach. That said, never skip what you’re asked to do. Skipping prep steps is one of the top reasons treatments fail.
What warranty or guarantee do you offer?
This is arguably the most important question on the list — and the one people most often forget to ask until it’s too late. A bed bug treatment is an investment, and you need to know what happens if it doesn’t fully work the first time.
Most reputable companies offer some form of warranty, particularly when treating the full home. But the details vary widely. Some warranties cover free re-treatments within a 30-day window; others extend to 90 days or beyond. Some are limited to partial infestations while others cover the entire property. Always ask for the terms in writing before any work begins.
Keep in mind that warranties come with conditions. A common one: if the treatment is “sabotaged” — meaning the infestation gets worse due to actions you took after treatment — the warranty may not apply. The two most common causes of this are using over-the-counter bug sprays or foggers after a professional treatment (which can scatter bugs and make them harder to eliminate) and bringing infested items back into the home.
Ask how long the warranty period lasts (30, 60, 90 days?)
Confirm whether re-treatment under warranty is fully free or discounted
Get all warranty conditions in writing before signing
Do not use store-bought sprays or foggers after treatment
Don’t bring in secondhand furniture or luggage from unknown sources
Companies that offer vague verbal guarantees but can’t put anything in writing — or that make warranties sound generous while burying voiding conditions in fine print. If the answer feels slippery, keep asking.
Will I need a follow-up treatment?
Short answer: almost certainly yes. The honest reality is that the vast majority of bed bug treatments — roughly 9 out of 10 — require at least one follow-up visit. This isn’t a failure of the initial treatment; it’s simply how bed bugs work.
Bed bugs lay eggs that can survive the first round of chemical treatment. Those eggs hatch days or weeks later, and if left unaddressed, a new generation can re-establish the infestation. A well-timed follow-up visit catches those newly hatched bugs before they can reproduce.
The number of treatments you’ll ultimately need depends heavily on how severe and how long-standing your infestation is. A lighter infestation caught early — one or two rooms, active for just a few months — may be fully resolved in one to two treatments. A more serious situation, such as three or more rooms infested for six months or longer, can require additional rounds of treatment.
Confirm the timing — how many days between treatment and follow-up?
Ask what signs to watch for that indicate the treatment is or isn’t working
Find out the cost of additional treatments beyond those included
A company that promises one treatment will always do the job is overpromising. A trustworthy exterminator sets honest expectations from the start — even when that means telling you something you’d rather not hear.
A few more questions worth asking
A trustworthy exterminator welcomes every question on this list. If a company pressures you to book immediately, hedges on warranty details, or can’t clearly explain their process — take those as red flags. Get at least two quotes, read the fine print, and make sure you feel fully confident before anyone sets foot in your home.
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