Bed bug guide
How to Inspect for Bed Bugs
A methodical routine for checking your own bed, a five minute version for a hotel room, and the test that tells a bed bug stain apart from ordinary grime.
Twenty unhurried minutes with a torch beats a week of guessing.
Knowing how to inspect for bed bugs is the skill that saves the money. Every expensive mistake in this pest starts the same way, with someone treating a bedroom on the strength of three itchy marks and no physical evidence at all. Twenty minutes with a torch settles the question properly, and it settles it either way.
The routine below is the one Tim runs on a job, trimmed to what a householder can do without tools. It works outwards from the bed in the order the insects actually colonise a room, names the specific spots worth opening up, and explains what each find looks like in real life rather than in a stock photo. There is a short version for a hotel room, a version for second-hand furniture, and a plain list of what to do the moment you find something. The rest of Tim's writing on household pests sits in the pest control guides index.
One piece of encouragement before you start. Finding nothing is a real result, not a failed search, as long as you searched the right places in the right order. Finding something early is better still, because a population caught in the first few weeks is confined to the bed and costs far less to clear than one that has reached the skirting boards.
The routine
Where do you look, and in what order?
Start at the head end of the mattress and work outwards in rings: mattress, base, frame, bedhead, then the metre of room around the bed, then everything further out. They colonise in that order, so searching in that order tells you how long the problem has been running as well as whether you have one.
You need a bright torch, an old bank card or a folded piece of stiff paper, a small jar or a strip of clear tape, and a phone camera. Hold the torch low and almost flat against the surface so the beam rakes across it, because a raking light throws a shadow off a raised seam and a flat overhead light does not. Run the card edge along each seam and fold as you go, which flicks anything hiding there out where you can see it.
- Strip the bedBedding straight into a bag, not onto the floor or a chair in the next room.
- Head end firstThe top third of the mattress is where most early finds sit, because that is where a sleeper's head and shoulders stay.
- Card the seamsPiping, the zip, the tufts, the label and the folded corners, both faces of the mattress.
- Then the structureBase, frame, bedhead, then outwards to the furniture, the floor edges and the walls.
The bed base deserves as much attention as the mattress. On an ensemble, lie on the floor with the torch and look up into the stapled fabric underneath, along the timber rails and into the corner blocks. On a slatted frame, the holes the slats sit in and the bolt holes at the corners are classic spots, because they are dark, tight and never disturbed. Unscrew one bolt if you can and look inside the hole.
A bedhead pushed against a wall hides two surfaces at once, the back of the board and the wall behind it. Ease it away from the wall and check the join where the uprights meet the frame, inside any button tufting, and along the top edge of the skirting it has been covering. In older Melbourne flats with deep timber architraves and gappy skirting, that run of wall behind the bedhead is where a spreading population moves next.
The bed
Piping, tufts, the zip, the label pocket, folded corners, stapled base fabric, slat holes, bolt holes, frame joints.
Within a metre
Bedside drawer runners, the underside of a drawer base, the back of a bedside table, a lamp base, a phone charger block.
The room
Skirting joins, carpet gripper at the wall edge, floorboard gaps, power point and switch plates, picture frames, curtain hems.
Soft seating
Lounges and recliners where somebody naps, cushion zips, the dust cover under the frame, the seam under each arm.
Do the search when they are not expecting you. These insects are mostly active in the small hours, so a check at around two in the morning with the torch, or a first look before the bed is made in the morning, catches more than a search at lunchtime. A daytime search still works, it just relies more on the signs they leave than on seeing one walking.
Reading the find
What are you actually looking at when you find something?
Four things are worth photographing: a live insect, a hollow pale husk, a one millimetre white grain stuck fast, and a dark dot that smudges rust-red when you touch it with a damp cotton bud. That last test is the one that separates a real find from grime, because ordinary dirt smears grey or black and never red.
| What you found | How it behaves | What it means |
|---|---|---|
| Dark dot on fabric | Bleeds rust-red into a damp cotton bud and sits slightly raised | Faecal spotting, the most reliable single sign |
| Black grit that brushes off | Stays black, rolls rather than smears | Dust, ant debris or grime, not a bed bug sign |
| Pale hollow shell | Keeps the shape of the insect, crushes to powder | A cast skin, so they are breeding here, not passing through |
| Tiny white grain | Glued down, does not roll when you tilt the surface | An egg, usually in a cluster in a tight crevice |
| Loose white specks | Roll freely, scatter when blown | Lint, skin flakes or mattress fibre |
| Rust smear on the sheet | Appears overnight near where you lie | A fed insect crushed in your sleep |
Size trips people up badly. A fully grown adult is roughly the length of an apple seed and flattened like one, but the juveniles you are far more likely to meet start at about a millimetre and are almost translucent until they have fed. People searching for something the size of a beetle walk straight past a nymph sitting in plain sight on a white seam.
Smell is a genuine sign and a late one. A heavily used harbourage can give off a sweetish, sticky, slightly off odour, and in a small sealed bedroom it is noticeable. If you can smell it, the population is well established and the search is now about mapping how far it has spread rather than proving it exists.
Collect, do not squash. Tape a specimen to a piece of white paper or drop it in a small jar, then photograph it against something with a known size such as a coin. Identification from a clear photo is quick and free, and it stops you paying for the wrong treatment entirely.
Marks on skin belong at the bottom of the evidence list, not the top. Reactions vary enormously between people sharing the same bed, some show nothing at all, and the marks can take over a week to come up, so the timing never lines up neatly with where anyone slept. The guide to bed bug bites goes through that properly, and the summary of which signs are worth trusting ranks the lot.
On the road
How do you check a hotel room in five minutes?
Leave the luggage in the bathroom, go straight to the head end of the bed, peel back the sheet and look along the piping and under the label, then check the bedhead and the bedside table. That covers the places a transferred population almost always starts, and it takes less time than waiting for the kettle.
The bathroom is the holding spot because it is the one room in a hotel with hard surfaces, no upholstery and nowhere to hide. Cases go on the tiles or in the bath, not on the bed or the carpet, until the check is done. The luggage rack is not a safe default either, because the webbing straps and the hinge joints on those racks are a known hiding place.
- Top corners of the mattressPeel the sheet back at the head end and run your eye along the piping and into the fold.
- Under the labelLift the care label and the tag at the corner, which is a dark pocket nobody ever cleans.
- Bedhead and side tableThe join behind a wall-mounted bedhead, the drawer runners and the back of the bedside table.
If you find anything, do not negotiate a room two doors down. Ask for a different floor or a different building, because neighbouring rooms share wall voids and service runs and are the most likely rooms to be affected. Tell the front desk plainly what you found and where; a decent operator wants to know, and the ones that matter already have a treatment process for it.
- Keep clothes in the case rather than the drawers, and keep the case closed and off the floor for the whole stay.
- Unpack in the laundry when you get home, not on the bed, which is the single habit that keeps most returning travellers clear.
- Run everything through a hot dryer on arrival, worn or not, because heat handles what a cold wash misses.
- Store the case away from bedrooms, in the garage or a hard-floored cupboard, and check its lining seams before the next trip.
This matters more in Melbourne over the summer visitor peak, when hostels, serviced apartments and short-stay flats are turning over constantly, and again across the school holidays. It is not about the standard of the accommodation. High turnover is the risk factor, and a well run five star hotel sees them just as a budget hostel does.
Before it comes inside
How do you check second-hand furniture?
Check it outside in daylight, upside down, before it crosses the threshold. Tip the item over, look into every staple line, joint, runner and fold, and pull back the thin dust cover stapled under a lounge or an armchair. If you cannot inspect the inside of it, and that is usually the case with an upholstered piece from a nature strip, leave it there.
Second-hand beds and lounges are the second most common way an infestation enters a Melbourne home after travel. The items at highest risk are exactly the ones people most want to rescue: a bed base, a bedhead, a sofa, a recliner, a padded ottoman. An item left on a nature strip during hard rubbish week was often put there for this reason, and taking it home is how one household's problem becomes two.
Upholstered items
Seam welting, zip channels, under the arms, the webbing, the staple line and the underside dust cover. Recliner mechanisms are impossible to check properly, which is reason enough to refuse one.
Beds and bases
Stapled fabric underneath, corner blocks, bolt holes, slat holes and the back of any padded bedhead. A second-hand mattress is not worth the risk at any price.
Timber furniture
Drawer runners, the underside of drawer bases, screw holes, the back panel join and any paper backing that has lifted. Lower risk, and still worth ten minutes outside.
Buying from a marketplace listing adds one useful question: ask the seller outright whether the item came from a bedroom and whether the home has had any pest treatment. The answer, and how it is given, tells you plenty. Collecting from a storage unit or a deceased estate clearance deserves the same treatment as hard rubbish.
Can I treat second-hand furniture myself before bringing it in?
Small items can be dealt with by heat, with a full cycle in a hot dryer covering anything fabric that will survive it. A whole lounge or bed base cannot be handled that way at home, because the heat has to reach the centre of the frame and the inside of every joint, not just the surface. Leaving it in a hot car in the sun is unreliable, since the temperature inside the cushions rarely gets to where it needs to be and never stays there long enough.
The next hour
You have found one. What should you do next?
Capture it, write down where and when, and change nothing else in the house. Do not start spraying, do not shift beds or lounges into other rooms, do not sleep somewhere else, and do not carry anything out through the hallway. The room you found it in is the room you want it to stay in until someone treats it properly.
The hour after you find one decides whether this stays a one room job.
- Keep the specimenTape or jar it, photograph it with a coin for scale, and note the exact spot it came from.
- Map it outCheck the other beds in the house and anything upholstered within a few metres of the one you found.
- Start a dated logRoom, date, what you found. That log is what a technician uses to aim the treatment.
- Put it in writingIf you rent or you are in a block, report it to the agent or owners corporation in writing straight away.
Writing it down early matters in a rental. Consumer Affairs Victoria handles disputes over repairs and who pays for what, and the documents that decide those cases are the condition report and the date the problem was first reported in writing. There is no fixed number of days in Victorian law that makes an infestation somebody else's responsibility, whatever you read elsewhere, so a dated written report protects you far better than an argument about timing. Follow the repairs process described by Consumer Affairs Victoria for Victorian renters.
In a flat or a townhouse, check whether the neighbouring unit has the same problem before anyone treats anything. Populations move between units through shared walls and service penetrations, and one flat treated alone while the one next door is left can stay under pressure indefinitely. A written inspection report naming the spread pathway is usually what gets an owners corporation to act.
Then get it looked at. Confirmation of what you have found, how far it has spread and what the room needs is the point of the first visit, and what that involves is set out under bed bug treatment in Melbourne. If you would rather work through the preparation and the DIY limits first, the guide on clearing bed bugs step by step covers the fortnight ahead. Tim is licensed in Victoria for this work, holding licence No. 86488, and is fully insured, covered treatments come with a guarantee that brings him back inside three months at no charge, and you can book an inspection for your own address once you know what you are dealing with.
Questions
Questions people ask about how to inspect for bed bugs
What do bed bugs look like to the naked eye?
An adult is around five millimetres long, oval, flattened top to bottom and a dull reddish brown, turning darker and rounder after feeding. Juveniles are much smaller, down to about a millimetre, and nearly see-through until they have fed. Most people meet the juveniles first and mistake them for lint.
Where do bed bugs hide during the day?
In tight, dark gaps as close to a sleeping person as they can get: mattress piping, tufts and labels, bolt and slat holes, frame joints, the back of a bedhead, drawer runners and the wall edge behind the bed. Once numbers grow they spread to skirting joins, carpet grippers and switch plates.
I found one insect. Does that mean an infestation?
Not necessarily. A single adult with no cast skins, eggs or spotting nearby can be a hitchhiker that arrived in a bag. Skins or eggs mean breeding on site. Either way, keep the specimen, search the rest of the bed properly, and avoid spraying anything while you work out which it is.
Can I inspect for bed bugs without pulling the bed apart?
Partly. Stripping the bedding, carding the mattress seams and checking the bedhead join finds most early cases. The spots that get missed without dismantling are bolt holes, slat holes and stapled base fabric, which is where a population that has been running a while usually sits.
How long should a proper self-inspection take?
Around twenty minutes for one bed done carefully, plus another ten if there is a lounge or armchair someone naps in. Rushing it is the common fault. If you have checked for five minutes under a ceiling light and found nothing, you have not really checked.
Do I need a professional inspection if I cannot find anything?
If marks keep appearing on people after a careful search of every bed in the house, yes, because a trained eye and a proper torch reach spots a householder will not open up. It also rules bed bugs out, which redirects you to fleas, a skin reaction or something else entirely.
Found something and want it identified?
Photograph what you found next to a coin for scale, say which room it came from, and Tim will tell you whether it reads as bed bugs before you spend anything.
Reviewed October 2026 by Tim, licensed pest control operator (Victorian licence No. 86488). Sources: the Better Health Channel on bedbugs and Consumer Affairs Victoria on renting.