Every autumn the same story turns up in our call-out reports: bites in a line along the arms three weeks after the holidays, a mattress that looks spotless, and a suitcase that has been stored under the bed since the trip. The bed bug (Cimex lectularius) does not jump, does not fly and does not live on skin. To move house, it needs transport: your luggage.
The good news is that coming home from a trip can be handled like a small quarantine operation. With a simple method, you stop the insect before it finds a hiding place in your home.
Why the suitcase is the number one carrier
An adult bed bug is 5 to 7 mm long, about the size of an apple seed. Nymphs are smaller and almost translucent until they have had a blood meal. The pearly white eggs are around 1 mm and are glued to surfaces.
During the day these insects look for dark cracks close to where people sleep. An open suitcase at the foot of the bed ticks every box: seams, inner pockets, wheel housings, zip gussets. A single fertilised female is enough to start a population.
Two habits make things worse:
- putting the suitcase on the bed during the stay, or against the headboard;
- unpacking in the bedroom on your return, then storing the suitcase under the bed, which is exactly where bed bugs want to live.
During the stay: cut the risk at the source
The protocol starts before you even unpack at the hotel or holiday rental.
The two-minute inspection
When you arrive, leave your bags in the bathroom (tiled floor, few hiding places) and check the bed with your phone torch:
- lift a corner of the fitted sheet and look at the mattress piping;
- examine the seams of the base and the back of the headboard if it comes off;
- look for clusters of black dots (droppings), small blood spots and empty brown skins.
Any doubt is reason enough to ask for another room, well away from the first one, not the room next door.
Good habits until you leave
- Use the luggage rack, pulled away from the wall and the bed.
- Keep the suitcase closed when you are not using it.
- Put worn clothes in a sealed bag inside the suitcase.
The quarantine protocol at home, in 5 steps
This is where it is won or lost. The goal: nothing reaches the bedroom before it has been treated.
1. Pick a buffer zone
Open the suitcase in a room without carpet or fabric: bathroom, tiled hallway, balcony. Never in the bedroom, never on the bed or sofa.
2. Sort everything into sealed bags
Empty your belongings straight into plastic bags and close them immediately: one bag for "washable at 60 °C", one for "delicate", one for "not washable". The bags are only opened again above the washing machine or the freezer.
3. Treat with heat or cold
Bed bugs and their eggs cannot survive extreme temperatures. The table sums up what works.
| Method | Setting | For |
|---|---|---|
| Washing machine | 60 °C minimum | Underwear, bedding, clothes that can take it |
| Tumble dryer | Hot programme, at least 30 minutes | Fabrics that cannot be washed at 60 °C |
| Freezer | At least 72 hours at −20 °C, bag sealed | Shoes, books, small items, delicate fabrics |
| Steam cleaner | Slow pass along the seams | Suitcase, backpack, suit carrier |
A 30 or 40 °C wash is not enough: it cleans, but it does not guarantee the eggs are destroyed.
4. Treat the suitcase itself
Vacuum the inside, the pockets and the seams thoroughly, then dispose of the bag or empty the dust container into a sealed bag outdoors. Then run the steam cleaner slowly along the seams and the wheel housings. A hard-shell case is far easier to treat than a fabric bag.
5. Store it away from sleeping areas
Keep the suitcase in a large closed cover, in a cupboard or cellar, not under the bed. It stays there until the next trip.
The next three weeks: monitor without panicking
Eggs hatch in one to two weeks at room temperature, so a bug that slipped through rarely shows itself on the first night. For three weeks:
- put interceptor cups under the bed legs, they trap insects climbing up;
- check the mattress piping and the seams of the base once a week;
- note any bites without jumping to conclusions: bites alone are not enough to identify the insect responsible.
Avoid the foggers and insecticide sprays sold in supermarkets. They push bed bugs into neighbouring rooms and make the professional treatment that follows harder.
When to call a technician
If you find an insect, a shed skin or droppings, photograph them and keep the insect in a small bag or on sticky tape: it is the best starting point for a diagnosis. With the Lock-Down Method, our technicians first detect (room-by-room inspection with torch and magnifier), then neutralise with dry steam or a suitable treatment, lock down hiding places (mattress encasements, sealing cracks) and monitor with a follow-up visit.
See the details on our bed bug eradication page, and the full identification sheet in our bed bug guide. Prices are published on the pricing page and you can book a slot online.
FAQ
Your questions
Should I throw away a suitcase that may have been in contact with bed bugs?
No, in the vast majority of cases. A hard-shell suitcase responds very well to careful vacuuming followed by steam on the seams and wheels. A fabric bag can go in a hot tumble dryer if it can take it, or stay in the freezer for several days inside a sealed bag.
How long can bed bugs survive in a closed suitcase?
A long time: an adult can survive several weeks, even several months, without a blood meal depending on the temperature. Leaving the suitcase shut in a corner solves nothing. It has to be treated, then stored away from bedrooms in a closed cover.
Do bites in a line prove there are bed bugs?
No. Bites in a row are suggestive, but other insects and some skin reactions leave similar marks, and some people do not react at all. Only finding insects, shed skins or droppings confirms an infestation, which is what the inspection is for.
