Moth fumigation
Many firms advertise moth fumigation, but true fumigation, filling a sealed space with a toxic gas, is dangerous work that the Health and Safety Executive controls closely and is rarely used in a home. What most households are offered is a fog or mist of insecticide, a spray course, or heat. A fog or spray course typically costs £200 to £300 for two or more rooms outside London.
A free matching service, not a pest control firm. We find a moth treatment specialist who covers your area and tell you who they are before anything is shared. How it works
When people ask for fumigation
- Moths have spread through several rooms and you want everything treated at once.
- Earlier sprays did not reach under furniture, into the pile or behind skirting.
- There are lots of stored textiles, such as a loft, wardrobe room or collection.
- You want a treatment that reaches the air and hidden gaps, not just surfaces.
- You run a shop, hotel or store where stock or furnishings are at risk.
What each method usually costs
| Job | Typical price |
|---|---|
| Insecticide fog or mist Usually part of a spray course; firms rarely price it alone | As spray courses |
| Spray course, two or more rooms A course of 2 or 3 visits, outside London | £200 to £300 |
| Whole home, heavy infestation A course of 3 or 4 visits, outside London | £280 to £450 |
| Heat treatment One visit with a spray; published London starting prices, 3-bed | From £1,134 |
| Gas fumigation Specialist work for sealed spaces or containers | Survey first |
Spray figures from the Fantastic Services moth control cost guide (updated 30 September 2026, including VAT); heat from the same firm's London moth control page, the only published domestic heat prices we found. Read 26 October 2026. A guide, not a quote. No UK guide publishes a price for gas fumigation of a home, so we do not give one. The cost calculator works out a range for your home.
What a good quote includes
Ask for these six points in writing. Two quotes that cover them can be compared line by line.
The real method
Fog, mist, spray, heat or gas. "Fumigation" on a quote should be replaced by the actual method.
The product
What will be used, its safety data, and how long rooms must stay empty.
Who is qualified
For gas, trained fumigators working to HSE rules, with a risk assessment and a plan for sealing and airing.
Smoke alarms and pets
Whether alarms need covering during fogging, and what to do with pets, fish and plants.
Visits included
A fog may not reach deep into carpet pile, so ask whether a spray or a second visit is included.
Coming back in
When it is safe to return, and whether surfaces need wiping down.
Not sure which method you need? Tell us about the problem and we will find a specialist to advise.
Ask for a free quoteHow fogging or heat usually goes
Survey
The technician checks how far the moths have spread and recommends fogging, spraying, heat or a mix.
Preparation
Clothes are washed or bagged, food and pets removed, and alarms, fish tanks and plants dealt with as advised.
Treatment
A fine fog or mist fills each room, often with a spray to edges and carpets, or the rooms are heated instead.
Airing and follow-up
You stay out for the stated time, air the rooms, then a follow-up visit checks for later hatching.
Questions people ask
Is moth fumigation safe?
True gas fumigation is not something to do at home. The Health and Safety Executive describes fumigation as dangerous and potentially fatal, needing a risk assessment and trained, competent fumigators. Fogging and spraying by a professional use insecticides approved for the job, with a set time out of the rooms.
What is the difference between fumigation and fogging?
Fumigation uses a gas that fills a sealed space completely. Fogging, or misting, sprays a fine cloud of liquid insecticide that settles on surfaces. Most domestic "fumigation" for moths is fogging.
Should I use a moth fogger or smoke bomb myself?
If you do, follow the label exactly. Shop foggers settle on exposed surfaces and miss larvae deep in carpets and under furniture, so they rarely end a real infestation. The BPCA advises calling a member firm for a major problem.
How long do I need to stay out after fogging?
The firm will tell you, based on the product. London council moth services advise coming back at least three hours after a spray treatment, and you will usually be asked to air the rooms when you return.
Is heat a better option than fumigation?
For many homes, yes: heat uses no insecticide on the treated items and is usually one visit. Conservation guidance treats 55°C as enough to kill every life stage. It costs more, and the room needs to be prepared so heat reaches every part.
Ask about moth fumigation
Three short steps: where, what and who. The more you tell us now, the better the specialist can plan the first visit.
This is a free matching service, not a pest control firm. We find a moth treatment specialist who covers your area and name them to you first. Nobody calls you until you say yes.
Thanks, your enquiry is in.
- Within one working day we will email or call to tell you which moth treatment specialist covers your area.
- Your details reach that firm only if you say yes.
- They survey the problem and give you a fixed price. No marketing from us, ever.