TL;DR — key takeaways
- Do the check before you unpack: park your suitcase in the bathroom, then inspect the bed for five minutes.
- Look for dark fecal spots that bleed into fabric like a marker, rusty blood stains, pale 1 mm shed skins and live insects — in mattress seams and piping, under the mattress tag, along box-spring straps and in the cracks of the bed frame and headboard.
- Bites are an unreliable clue. Some people never react to them, and bed bug bites can look like mosquito, flea or midge bites.
- Insect repellent is not a bed bug tool. Skin repellents, whether DEET or plant-based PMD, are made for mosquitoes and ticks — bed bugs are dealt with by inspection, heat and professional pest control.
- The trip home is the risky part: unpack away from the bedroom, wash everything at 60 °C and tumble dry hot for at least 30 minutes.
Bed bugs are not a hygiene problem, and a five-star rate is no protection — Cimex lectularius travels in luggage, and a room is only ever as clean as its last guest. The good news is that hotels are the one place where you can inspect before you commit, and the check takes less time than unpacking a toothbrush.
What bed bugs actually are
Adult bed bugs are flat, oval and reddish-brown, roughly 5 mm long — the US Environmental Protection Agency describes them as about the width of a credit card, which is why they fit into seams, screw holes and the joint of a headboard. They feed at night, on blood, and spend the day hidden within a couple of metres of where people sleep.
Two things worth knowing before you panic. First, bed bugs are not known to transmit disease to people — unlike mosquitoes or ticks, they are an itch-and-anxiety problem, not an infection risk. Second, they are not a sign of a dirty room; they are a sign that an infested suitcase passed through.
The five-minute room check
1. Park the luggage somewhere hard
Before anything else, put your case in the bathtub or on the bathroom tiles. Hard, bright, seam-free surfaces are the one place in a hotel room bed bugs have nowhere to hide. Not on the bed, not on the carpet, not on the upholstered bench at the foot of the bed.
2. Strip back the bedding
Pull the sheet back from the top corners and the foot of the mattress. Use your phone torch. You are looking at the piping and seams, under the mattress label, and along the top surface where the sheet has been sitting.
3. Go under and behind
Lift the mattress corner and check the box-spring canvas and straps. Then the bed frame joints, screw heads, and the gap behind the headboard — headboards are a classic harbourage because they are rarely moved during cleaning.
4. Check the soft furniture nearby
If the bed is clear, glance at the seams of an armchair or sofa, the folds at the top of curtains, and the joints of the bedside drawer. In a heavier infestation, EPA also lists loose wallpaper edges, electrical fittings and the wall-to-ceiling junction.
5. Decide before you unpack
Found nothing? Unpack normally, but keep the case closed on the luggage rack, pulled away from the wall and the bed. Found something? Do not simply move next door — ask for a room on a different floor if possible, since bed bugs spread through adjoining walls, and keep your luggage out of the original room from the moment you suspect it.
What the signs look like
| Sign | What it looks like | Where to find it |
|---|---|---|
| Fecal spots | Dark, ink-like dots that bleed into fabric like a felt-tip marker | Mattress seams, under the tag, along the frame |
| Blood stains | Rusty or reddish smears from crushed bugs | Sheets, pillowcases, mattress surface |
| Shed skins | Pale yellow, about 1 mm, hollow and insect-shaped | Seams, crevices, behind the headboard |
| Eggs | Whitish, about 1 mm, often in clusters in a crack | Deep seams, screw holes, frame joints |
| Live bugs | Flat reddish-brown insects, 5 mm; nymphs smaller and paler | Anywhere within a couple of metres of the bed |
Why the bites are not proof
Bed bug bites are typically raised, itchy and grouped or in a rough line on skin that was exposed while you slept — arms, shoulders, neck, face. But reactions vary enormously: some people develop obvious welts, others show nothing at all, and a bite that appears on day three might be from the room you slept in on day one. Identification by bite alone is guesswork, which is why the physical signs matter more. If you are trying to work out what bit you, our guide to telling mosquito, bed bug and flea bites apart walks through the pattern differences.
Does insect repellent keep bed bugs away?
No, and it is worth being straight about that. Skin-applied repellents — DEET, picaridin, IR3535 and plant-derived PMD alike — are designed and tested against biting flies and ticks that hunt you in the open. Bed bugs live in the bed, feed while you are unconscious for hours at a time, and are not controlled by anything you spray on your forearms before dinner. Repellents are for the mosquitoes on the balcony; the bed itself is an inspection-and-heat problem.
Getting home without passengers
- Unpack outside the bedroom. The hall, the garage or the bathroom — anywhere but on top of the bed you sleep in.
- Wash hot. The NHS advises a 60 °C wash and a hot tumble dry for at least 30 minutes; the heat, not the detergent, is what kills them. Run everything, including clothes you never wore.
- Freeze what cannot be washed. Seal items in a bag and leave them in the freezer for two to three weeks.
- Vacuum the case inside and out, paying attention to the lining seams and wheel housings, then empty the vacuum into a sealed bag and put it in an outdoor bin.
- Store the case away from the bedroom — a loft, cellar or garage, not under the bed.
- Call a professional early if you find live bugs at home. DIY sprays scatter an infestation and rarely finish it.
If you are staying somewhere self-catered rather than in a hotel, the same logic applies to the whole property — our notes on insect-proofing a holiday rental or villa cover the doors, windows and drains that let everything else in.
How incognito® helps
We will not pretend our repellent solves bed bugs — it does not, and no skin repellent does. What we can help with is the aftermath, and the mosquitoes waiting outside the room. For the itch, Zap-Ease Instant Insect Bite Relief is a small, drug-free device that goes in hand luggage and takes the edge off bites without a cream. For skin that has had a week of sun, salt and scratching, our Natural Aftersun & Moisturiser calms things down again. Both are vegan, and our repellents remain DEET-free and built on PMD (para-menthane-3,8-diol), sourced as Citrepel® from Javan citronella (Cymbopogon winterianus) — clinically proven, biodegradable, and recommended against mosquitoes and ticks.
FAQs
How do I check a hotel room for bed bugs?
Leave your luggage in the bathroom, pull back the sheets and use a phone torch to inspect the mattress seams, piping and label, the box-spring straps, the bed frame joints and the gap behind the headboard. You are looking for dark fecal spots, rusty stains, 1 mm shed skins and live insects.
Can bed bugs live in your suitcase?
Yes — luggage is the main way they travel between rooms, homes and countries. They hide in lining seams, zips and wheel housings, which is why a hard case kept closed and off the floor is safer than an open holdall on the bed.
Do bed bugs spread disease?
Bed bugs are not known to transmit disease to people. The problems they cause are itching, disturbed sleep, occasional allergic reactions and infection from scratching an open bite.
Does insect repellent work against bed bugs?
No. Skin repellents, including DEET and plant-based PMD, are formulated against mosquitoes, ticks and biting flies. Bed bugs are controlled by inspection, hot washing, heat treatment and professional pest control.
What temperature kills bed bugs in the washing machine?
The NHS advises washing affected bedding and clothing at 60 °C and tumble drying on a hot setting for at least 30 minutes. Items that cannot be washed can be sealed in a bag and frozen for two to three weeks.
How soon would I know if I brought bed bugs home?
Not immediately. Bites may take days to appear or never appear at all, and a small population is easy to miss at first. If you suspect an infested room, treat your luggage as contaminated straight away rather than waiting for symptoms.
Sources
- US EPA — Bed bugs
- US EPA — How to find bed bugs
- US EPA — Protecting your home from bed bugs
- US EPA — Bed bug myths
- NHS — Bedbugs
- NHS — Insect bites and stings
- US EPA — Skin-applied repellent ingredients
This article is for general information and is not medical advice. If a bite becomes very painful, increasingly swollen or shows spreading redness, seek medical advice. Always follow the product label.