Why second-hand furniture deserves a proper look

Buying second-hand is one of the smartest things you can do for your home. A solid oak chest of drawers for the price of a flat-pack, a well-made armchair that has already proved it can survive twenty years of family life, a bedside table with real joinery rather than glued sawdust — these are bargains worth having. We are not here to put you off them.

But upholstered furniture is the single most common way bed bugs travel from one household to another. They are not a sign of dirt, neglect or bad housekeeping. They are hitchhikers, and a sofa that has sat in a bedroom for a decade is a perfectly good vehicle. A house clearance, an auction lot, a boot sale find, a piece left outside a charity shop — all of it is worth ten minutes with a torch before it crosses your threshold.

Know what you are looking for

Adult bed bugs are around 5–7mm long, flat, oval and reddish-brown, roughly the size and shape of an apple seed. After feeding they swell and darken. Young nymphs are pale, almost translucent, and very small — easy to mistake for a speck of dust until it moves. Eggs are milky white, about 1mm, and glued into cracks rather than laid loose.

You are more likely to spot the evidence than the insect itself:

• Dark speckles along seams and in crevices — bed bug faeces. A useful test is to wipe a suspect mark with a damp tissue: if it smudges reddish-brown, treat it as a warning sign.
• Cast skins, which look like translucent amber husks. A growing bed bug sheds its skin five times.
• Tiny pale eggs or empty egg cases tucked into stitching and joints.
• A sweet, musty, slightly almond-like smell in a badly infested item. If you notice this on a viewing, walk away.

Do not panic at every brown mark. Carpet beetle larvae leave bristly brown-gold skins that alarm people constantly, and they are harmless. But if you cannot identify a mark with confidence, assume the worst and leave the item where it is.

The inspection routine

Take a bright LED torch — the light on your phone will do at a push, but a proper torch is far better — plus a thin plastic card or blunt knife, a sheet of white paper, and a pair of gloves. Work in daylight or with the room lights on, and be systematic. Bed bugs cluster, so where you find one sign you will usually find more.

• Remove every cushion, pad and loose cover. Unzip them and look inside the lining, along the zip tape, and at the seams where the fabric was stitched.
• Run the edge of the card along every seam and piped edge. Drag it slowly and tap whatever comes out onto the white paper. This is where the majority of bed bugs hide.
• Turn the item upside down. Check the dust cover underneath, the webbing, the staples and any folded fabric where the frame meets the upholstery.
• Look at the joints, corner blocks and legs. Bed bugs happily live in bare wood. Check screw holes, mortise joints and the underside of wooden arms.
• On wooden furniture, pull out the drawers and inspect the runners, the back panel, the joints at the corners, and any old screw holes or splits in the timber.
• Check wicker and rattan especially carefully. All those crevices are ideal harbourage, and a torch beam will not reach the middle of them.

At the seller's end

Ask straight questions: where has it been kept, how long have they had it, has anyone in the house had bites or treated for bed bugs in the last year. Most people answer honestly. If the seller is vague, or if the piece is being sold alongside a mattress, a divan base and a bundle of bedding, treat that as a red flag.

Be cautious with anything left out on the pavement, however tempting and however free. Furniture that has sat in a shared stairwell or on the street overnight can pick up all sorts. House clearance stock and ex-hotel furniture are not automatically suspect, but they do come from places where beds and soft furnishings have been in close contact with a lot of people. Inspect them twice as thoroughly.

Getting it home and isolating it

Wrap the item in plastic sheeting or a mattress bag before it goes in the car, and take it straight to a garage, shed or outbuilding — not through the hallway and not into a bedroom. If you have no outbuilding, keep it in one room with the door shut and the skirting boards vacuumed afterwards.

Leave it isolated for at least three weeks, four if you can manage it, since eggs hatch in roughly ten days at normal room temperature. Put a sheet of white paper underneath, and check it weekly with a torch — looking at the paper, the seams and the frame. If you see nothing after a month, bring it in with reasonable confidence.

If you find something, and when to call for help

If the item is still outside and you find live insects, cast skins or faecal spotting, do not bring it in. Bag it, take it back, or arrange a council bulky waste collection.

If it has already come indoors, act quickly and calmly. Wash removable covers at 60°C and tumble dry on a hot setting for at least thirty minutes. Steam the seams, joints and folds with a fine-nozzle steam cleaner — steam kills eggs as well as adults. Freezing is unreliable in a domestic freezer and usually needs several days at a genuine –18°C. Avoid the insecticide foggers sold for home use; they scatter bed bugs into other rooms and make a proper treatment harder. Diatomaceous earth used very lightly along skirting boards can help, but never dust a mattress you sleep on.

Above all, if you find live bed bugs on furniture that is now inside your home, or if bites start appearing, call in a qualified pest control technician rather than trying to manage it yourself. This is a job with a proper method behind it, and getting it right the first time saves an enormous amount of grief. There is no shame in it whatsoever — bed bugs find their way into immaculate homes every day of the week, and the only thing that matters is how quickly you deal with them.