I’ll be straight with you: bed bugs are one of the few pests where “just spray something and hope” doesn’t work. I’ve spoken to people who went through three different shop-bought sprays before realising the problem was never the product, it was the approach — bed bugs hide deep in seams and skirting boards, and a light surface spray never reaches them. This guide covers what actually makes a difference, based on how professionals structure a real treatment plan.
What Are Bed Bugs (And Why They’re So Hard to Shift)
Bed bugs are small, flat, reddish-brown insects roughly the size of an apple pip. They feed on blood, usually at night, and hide during the day in cracks within about two metres of where you sleep — mattress seams, bed frames, skirting boards, and behind picture frames. They don’t fly and they don’t jump, so an infestation almost always arrives via luggage, secondhand furniture, or clothing rather than “dirty” homes; cleanliness has very little to do with whether you get them.
What makes them stubborn is biology: females lay several eggs a day, the eggs are glued to surfaces and resistant to most sprays, and adults can survive months without feeding. A single missed hiding spot can restart the whole infestation weeks later.
Signs You Actually Have Bed Bugs
The most reliable early sign isn’t the bugs themselves, since they’re good at staying hidden, but the evidence they leave behind: small dark faecal spots along mattress seams, tiny pale shed skins, and a faint musty smell in a heavily infested room. Bites often appear as itchy red welts in a line or cluster, though reactions vary a lot person to person, so bites alone aren’t proof.
Step-by-Step: Getting Rid of Bed Bugs Yourself
A DIY approach can work for a genuinely early, localised infestation, but it needs to be thorough and repeated. Here’s the order that tends to actually work:
1. Wash and dry on high heat. Wash bedding, curtains and washable fabric at 60°C and tumble dry on a hot setting for 30 minutes — heat above roughly 50°C kills bugs and eggs; cold washing does not.
2. Vacuum thoroughly and often. Go over the mattress, bed frame, skirting boards and carpet edges, then immediately empty the canister into an outside bin, not the kitchen one, or they’ll climb back out.
3. Isolate the bed. Pull the bed frame away from the wall and any curtains, and consider bed bug interceptor traps under each leg. These stop bugs climbing up from the floor and give you an easy way to monitor whether numbers are dropping.
4. Treat with an appropriate insecticide. Apply a labelled bed bug treatment to cracks, seams and skirting boards, following the label exactly — more product is not more effective and can be unsafe.
5. Repeat and monitor. Most products need reapplying after 10-14 days to catch newly hatched eggs. Check interceptor traps weekly for at least a month before you consider it resolved.
Sprays, Steamers and Treatments That Actually Work
In our research, the products that hold up best combine a residual insecticide, one that keeps working for days, with a contact spray for bugs you see directly. A handheld fabric steamer reaching at least 100°C at the nozzle is also effective on mattress seams and sofa fabric, since heat kills on contact without leaving residue on things you sleep on.
A mattress encasement zipped over the whole mattress (not just a protector) traps any surviving bugs inside and starves them, while stopping new ones getting in. It’s one of the few products with decent evidence behind it rather than marketing claims.
Look for a labelled residual bed bug spray and a zip-up mattress encasement as your core kit.
Shop on AmazonWhen to Call a Professional
I won’t pretend DIY always cuts it. If bites continue after two full treatment cycles, if you’re in a flat with shared walls (bed bugs travel between neighbouring properties through wall cavities), or the infestation covers more than one room, it’s time to call a licensed pest professional. Professional heat treatments can raise a whole room to a lethal temperature in one visit, reaching hiding spots a spray never will. Landlords are often responsible for treatment costs in rented properties, so check your tenancy agreement first.
Frequently Asked Questions
Yes. They can hide in seams and pockets of clothing and luggage, which is the most common way infestations spread between homes and hotels. Inspect and wash clothing on return from travel if you’re concerned.
No. Bed bugs are attracted to warmth and carbon dioxide from breathing, not dirt or food, so they affect clean and untidy homes equally. Clutter just gives them more places to hide.
A DIY approach typically takes 4-6 weeks across multiple treatment cycles to fully resolve, since you need to catch eggs that hatch after the first treatment. Professional heat treatment can resolve an infestation in a single visit in many cases.
Usually not on its own. Bed bugs typically spread beyond the mattress to the frame, skirting boards and nearby furniture within days, so replacing the mattress without treating the room often just delays the problem.
Affiliate disclosure: Pest Expert may earn a commission from qualifying purchases made through Amazon links in this article, at no extra cost to you. This helps fund our independent testing and research.
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