Evidence and extent
First, ask what confirms bed bugs, and which rooms, furniture and nearby spaces the firm inspected. BPCA says an in-depth survey is crucial, so a firm that quotes without one deserves a closer look. Ask what would make the scope grow if they find more, because a scope that can only grow needs a clear limit.
Bites alone do not prove bed bugs, because other insects and skin problems can leave similar marks. For that reason, ask whether the firm considered a lookalike pest. Our inspection guide shows what a proper search covers, and the post on bed bug bites or something else explains how to read the marks.
- Can you show me the evidence?
- How did you decide the room scope?
- Could this be a lookalike?
Method and safety
Next, ask which method the firm proposes and why. It may use heat, residual insecticide, steam or a mix, while our treatment methods guide explains each one. Ask who can be in the home, and request the safety and re-entry instructions in writing.
The Health and Safety Executive (HSE) says the public should only use biocide products made for the general public. It also says professional users need information, instruction and training for the products they use. Therefore, ask what training the technician has and which products they plan to use.
- What must leave the room?
- What should I not clean afterwards?
- How do you handle children, pets and aquariums?
Preparation and who does what
BPCA lists poor preparation as a top reason for failed treatments. It suggests a written checklist that sets out who does what. It also notes that a firm may decline to treat if the tasks are not done. So ask for that list before the visit, and read our guide to preparing for a visit.
Councils set out their own rules. Manchester, for example, says you must carry out the preparation or the treatment cannot go ahead. Leeds asks you to declutter, tidy and hot launder first. Compare any private firm's list with the council wording in our Manchester area guide and Leeds area guide, since the tasks differ.
Follow-up and failure conditions
Ask when the next review happens and what you may see in the meantime. Manchester says seeing one or two bed bugs after treatment is very common. However, it also says a free revisit may be possible if many remain after 21 days.
Read the warranty exclusions before you pay, because a warranty tied to impossible preparation, or to no follow-up, is not a plan. Under the Consumer Rights Act 2015, a trader must perform a service with reasonable care and skill. That gives you something to point to if the work falls short.
Questions about records and paperwork
Ask what the firm will leave with you after each visit. BPCA says a firm should tell you which chemicals it used, when areas are safe to enter, what the follow-up procedure is and how long the treatment will take to work. Therefore, ask for these details in writing before the technician leaves.
Ask how the firm records its findings, too. Photos, notes by room and dated visit records all help if you need to raise a problem later. Keep the quote, the preparation list and the visit notes together in one place.
Questions about the firm
Finally, ask about the business behind the quote. Which trade body does it belong to, and can you check that yourself? Membership alone does not prove a good fit, yet it is a fair starting point. Our guide on finding a bed bug exterminator explains what BPCA and NPTA membership does and does not tell you.
When you have your answers, compare quotes using the cost guide. If you are still looking for someone to speak to, you can send the help request form. For treatment questions, our post on heat treatment lists extra points to raise.
Frequently asked questions
What is the most important question to ask?
Ask what evidence confirms bed bugs and how the firm decided the room scope. BPCA says no treatment is fully effective without an in-depth survey, so the answer shows whether the firm looked or simply guessed.
Should I ask about guarantees?
Yes, but read the conditions first, because Manchester says it cannot guarantee complete eradication, yet it returns within 28 days if you tell it the bugs came back. A guarantee is only as good as its written terms.
Can I use DIY products while I wait?
Be careful, because BPCA warns that amateur products can push bed bugs into other rooms or neighbouring homes. Our post on DIY bed bug treatment explains what helps and what backfires.
What if the treatment fails?
Start with the written revisit terms and the firm's records of what it did. The Consumer Rights Act 2015 says a trader must perform a service with reasonable care and skill. Check your contract for the guarantee terms, and ask for a re-inspection. Meanwhile, keep dates and photos of any new signs.
Sources and further checks
Open the source before acting on information that may change, including council services, prices, tenancy rules and product labels. Each link below goes to the organisation that publishes the original guidance.