- Why Most Stay Close
- When They Move Further
- What It Means for Which Rooms Are Treated
- Heat or Chemical Across Several Rooms
Bedbugs can walk, not fly or jump, and they are not built for long journeys. They need a meal every so often and they get it from a sleeping person, so the sensible place for them to be is as close to that person as they can hide.
Why Most Stay Close
In a room that has not been disturbed, most bedbugs sit in the mattress seams, the frame, the headboard and the bedside furniture. From there they can reach the sleeper and get back into cover before morning. A few spread out along the skirting, into the carpet edge or behind a picture or a socket, but the bed is the centre of it.
The same pattern shows up around other places where people rest for hours. A sofa someone falls asleep on in the evening, or an armchair that is used every night, can hold its own small group. Our London guide on where pest controllers treat for bedbugs shows the usual spots.
When They Move Further

- Numbers. As the group grows, the best hiding places fill up and newer ones settle further out, along the skirting and into the next piece of furniture.
- The sleeper leaves. If the person moves to another room, the hungry ones go looking, under doors and along the landing, until they find someone.
- Disturbance. Shop sprays, foggers and dragging furniture about scatter them into places they would not otherwise have reached.
- Belongings. Bags, bedding, laundry baskets and soft toys carried from room to room take them much further than they would walk.
- Shared walls. In flats and terraces they can follow pipes, cables and gaps into the home next door.
Of these, the one people do to themselves most often is moving out of the bed. It feels protective, and it is usually what turns a one-room job into a two-room one.
While you wait for a treatment date, the aim is to give them no reason to wander. Keep sleeping in the same bed, leave the furniture where it stands, bag the bedding before it leaves the room, and hold off on swapping pillows, blankets or toys between bedrooms for a while.
What It Means for Which Rooms Are Treated
When we price a job we are really asking where the bugs could have got to. That normally means the bedroom where they were found, plus any room where the same person, or their things, spent long periods. A visitor’s room, a sofa that doubled as a bed, the room a child moved into for a few nights: those go on the list.
A room that nobody sleeps or sits in, and that nothing has been carried into, is often left off, but we would rather check it than guess. If the picture is unclear, an inspection maps which rooms show signs before anything is booked.
Heat or Chemical Across Several Rooms
When more than one room is involved, heat is often the simpler route because it deals with every life stage in one visit; see heat treatment in Hillingdon. Chemical works across several rooms too, but each one needs clearing and each needs the follow-up visits. Treating too few rooms is the false economy: if the neighbouring bedroom was missed, the problem comes back from there.
The Hillingdon page covers how to plan treatment around the people in the house.
Related Questions
Can bedbugs travel from one room to another?
Yes. They walk along skirtings and under doors, and they travel much further in bags, bedding and furniture that is moved between rooms.
Do bedbugs go downstairs?
They can, usually in something that was carried down or when the person they feed on starts sleeping on a sofa downstairs.
If only one bedroom has signs, why would you treat another?
Only if someone from that room has slept elsewhere, or things have moved between the rooms. If not, the one room is normally the job.
Will a spray from a shop stop them spreading?
It tends to do the opposite. Sprays scatter them away from the bed and into more rooms, which makes the treatment bigger.
More Bedbug Advice for Hillingdon
Written up in full for people in the borough, and worth reading before the treatment day.

Bedbugs From a Plane?
The honest risk from the seat and the cabin bag, the bigger one at your destination, and getting home clean.
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Bedbug Bites on Children
Where children tend to be bitten, what else the marks could be, and who to ask about them.
Read more →
Can You See Bedbugs?
What adults, nymphs and eggs look like by eye, what a torch and magnifier add, and why they get missed.
Read more →
Telling a New Tenant About Bedbugs
What records help, what to say to someone moving in, and why being straight with them pays off.
Read more →Bedbug Control Across Hillingdon
Each area page is written around one situation we deal with.
Bedbug Treatments in Hillingdon
Every service has its own page for Hillingdon: 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.