- The Inspection
- Preparation
- A Heat Treatment Day
- Chemical Visits
- Who Needs to Be Home
- After the Treatment
The time you need depends mainly on which route you choose. Heat puts the disruption into one long day. Chemical spreads it over two or three shorter visits across a few weeks. Neither needs you to move out, and neither needs every adult in the flat to take leave.
The Inspection
If you are not certain it is bedbugs, or not sure how many rooms are affected, an inspection comes first. Someone needs to let us in and show us where people sleep, and ideally that is the person who has been getting bitten, because they can point to where it started. It is a much shorter visit than a treatment.
If you already know it is bedbugs and which rooms, you can often go straight to treatment. We will say which applies when you ring.
Preparation
Preparation does not need a day off, but it needs time, and people underestimate it. Spread it across the evenings before the date.
- Hot-washing and bagging bedding and the clothes near the bed, a load at a time.
- Clearing floors and the space under the bed, so every edge can be reached.
- For heat, taking out aerosols, candles, medication, vinyl, plants and some electronics.
- In a flat share, each person whose room is treated does their own room.
The London guide to preparing for heat treatment has the full list for a heat day.

A Heat Treatment Day
Heat usually takes most of a day. The rooms being treated are raised to a temperature bedbugs cannot survive and held there, with a thermal camera used to check for cold spots. Nobody can be in those rooms while it runs, and pets need to be out of the flat.
Someone needs to let us in at the start, and should be reachable during the day. Whether that person must stay for the whole treatment, and how access works if you cannot be there, is something to ask when you ring rather than assume. Plan for the rooms to be usable again once they have cooled, later that day. The London guide on how long heat treatment takes explains what makes a day longer or shorter.
Chemical Visits
Each chemical visit takes one to two hours. There are usually two, sometimes three, about 10 to 14 days apart, so the bugs that hatch after the first visit meet the residue. Before each visit, the bedding is stripped and washed and the floor cleared again.
After each visit, keep out of the treated rooms until the surfaces are dry, and follow what we tell you on the day. For many people, that means a late start or an early finish on two or three days rather than whole days off.
Who Needs to Be Home
- Inspection: one person who knows where everyone sleeps.
- Preparation: everyone whose room is being treated, in their own time.
- Heat day: someone to let us in and stay reachable; everyone and every pet out of the treated rooms.
- Chemical visits: someone to let us in at each visit, then out of the room until it is dry.
- Afterwards: normal life, sleeping in your own bed, and telling us about anything you see.
If none of you can take the time, say so when you ring. It may affect which treatment fits your household. The Tower Hamlets page looks at choosing between the routes when everyone works long hours, and the guide on what affects the cost covers the price side of the same decision.
After the Treatment
There is no time off needed afterwards. Keep sleeping in your own bed, because that draws any survivors onto treated surfaces rather than somewhere new. The London guide on what happens after treatment covers the weeks that follow.
Related Questions
Do I need to take a whole day off for heat treatment?
The treated rooms are out of use for most of a day, and someone needs to let us in and be reachable. Ask when you ring what can be arranged if nobody can be there throughout.
Can I go to work during a chemical visit?
Someone needs to let us in, and each visit takes one to two hours. After that, the room stays empty until it is dry, so many people go in late or leave early.
Do I need to stay somewhere else overnight?
Usually not. With heat, the rooms are back once they have cooled; with chemical, once the surfaces are dry. Follow the instructions given on the day.
My housemate works nights. Is that a problem?
It can be managed, but tell us when you ring, because a heat day means nobody can sleep in the treated rooms while it runs.
More Bedbug Advice for Tower Hamlets
Written up in full for people in the borough, and worth reading before the treatment day.

Lifts and Corridors
How they actually move through a block, and why the lift is not the thing to worry about.
Read more →
Bedbugs in a Sofa Bed
The folding frame, the thin mattress and the cushions: where to look and how it is treated.
Read more →
Bedbugs and the Gym
Changing rooms, lockers and kit bags: the honest picture and a routine that takes no time.
Read more →
What Affects the Cost
Rooms, method, visits and preparation: what changes the figure and what does not.
Read more →Bedbug Control Across Tower Hamlets
Each area page is written around one situation we deal with.
Bedbug Treatments in Tower Hamlets
Every service has its own page for Tower Hamlets: heat, chemical, hotels, commercial premises and inspections.
Tell Us About the Property
Tell us what you have seen and where, and we will tell you what it needs.