Flea guide
How to Get Rid of Fleas in the House
A household guide to clearing fleas out of a home: the stage that beats a single treatment, the three jobs that have to happen at once, and the fortnight that decides whether it worked.
The biting adults are the visible minority. The rest of the population is down in the floor.
Almost every failed attempt at how to get rid of fleas fails for the same reason: the plan was aimed at the fleas people could see. The adults jumping onto your ankles, or combed off the cat, are a small slice of what is living in the building. The larger share is spread through the floor as eggs, as blind grubs feeding on debris down in the pile, and as fully formed fleas sealed inside cocoons that are waiting for a reason to open.
Once you accept that, the whole job reorganises itself. You stop measuring progress by how many fleas you squash and start measuring it by what is happening in the floor over a fortnight. This guide is written for the person doing the work at home, and it sits with the other pest control guides Tim keeps for the nine pests he treats.
One boundary first, because it saves people money and arguments. Nothing goes on a cat or a dog from a pest controller. Flea products for animals are registered as veterinary medicines, dosed against weight and age, and the person who should choose one is the vet who can examine the animal. Tim's half of this is the building, the furnishings and the ground outside, and that is where the rest of this guide stays.
The key idea
How to get rid of fleas: why is most of the population not on the pet?
Because only the adult stage feeds on an animal, and the adult stage is the short end of the life cycle. Eggs fall off the coat wherever the animal walks, grubs burrow away from light into carpet and floor gaps, and the stage after that wraps itself in a cocoon. A product on the pet reaches none of those three.
Picture a dog shaking itself beside the back door. Flea eggs are smooth and dry, so they do not stick to fur the way nits stick to hair. They drop. That is how a single animal seeds a hallway, a lounge cushion, a bed base and a strip of dirt under the clothesline, all within a few days of a problem starting.
What hatches out of those eggs does not look like a flea and does not behave like one. It avoids light, which is why it works its way down between carpet fibres, under the edge of a rug, into the join between a floorboard and a skirting, and into the dust at the back of a wardrobe. It feeds on organic crumbs and on the dried blood that adult fleas leave behind, so it has no interest in you at all.
- Cocoon stage
- A silk case the grub spins around itself, which immediately collects dust, grit and carpet fibre until it is camouflaged and physically tough. A finished flea can sit inside one, alive and still, long after everything loose in the room has been killed.
The cocoon is the reason a one-off attack never ends a flea problem. Nothing applied to a surface gets through one. The Better Health Channel notes that vibration such as footsteps is what makes the adults emerge, which is the clearest everyday proof of the whole idea: a house shut up for weeks has no footsteps, so nothing emerges, so the floor looks spotless right up until somebody walks across it with a suitcase.
Melbourne households meet this every January. A family comes back from a fortnight at the coast, opens the front door, and gets bitten in the hallway before the bags are unpacked. Nothing arrived while they were away. The population had simply been building quietly all through the warm weather with nobody triggering it.
The same mechanism catches people with no animals at all. A rental between tenancies, a house sold after a long settlement, a holiday flat in autumn: the previous occupants had a pet, the cocoons stayed shut while the rooms were empty, and the new arrivals walk into a waiting generation on their first evening. Being bitten is not evidence that you brought anything in.
Three jobs
Which three things have to happen at the same time?
The animal goes to the vet, the household does the cleaning, and somebody treats the building. Those are three separate jobs with three different owners, and running them a month apart is why so many flea stories drag on all summer. The animal keeps restocking an untreated floor, or a treated floor keeps restocking an animal that nothing has been put on.
The vet, every animal
Not the pet shop aisle, and not a pest technician. Book in every animal in the household, including the elderly cat that never goes out and the dog that belongs to a housemate. Dose by weight, keep it running for the full period you are told, and raise worming while you are there.
You, the floors and the washing
Vacuuming and hot washing physically remove life stages that no product touches. This is unglamorous and it is the part that moves the numbers fastest, which is covered properly in the next section.
A technician, the building
Floor surfaces, edges, cracks, furniture frames and the shaded ground outside, with something that keeps working while cocoons keep opening. This is the leg people try to skip, and it is the one that holds the result together.
Order matters less than overlap. If the vet appointment is on Tuesday and the house is treated on Thursday, that is fine. If the vet appointment is in three weeks because that was the next opening, the house treatment should move to match it rather than going ahead alone.
Fleas also travel further than the lounge room, and the forgotten locations are predictable. A car boot where the dog rides, a pram that lives in the hall, a dog bed in the shed, a beanbag in a sleepout, a caravan parked down the side. Any of these can hold a reservoir that reinfests a cleared house a month later.
Check the animal properly before you spend anything. Push the coat back behind the ears and along the base of the tail, looking for dark specks as much as for the insects themselves. Tap a few specks onto moistened white tissue. Flea dirt is dried blood and it bleeds into a rusty ring, while ordinary grit stays dry and grey.
One household member reacting badly while nobody else notices anything is common enough to mention, because it makes people doubt themselves. Sensitivity to the saliva varies a great deal between people in the same room, and a partner with no marks is not evidence that you are imagining it.
Technique
What is the right way to vacuum a floor that has fleas in it?
Slowly, along the edges rather than the middle, every day for a fortnight, emptying outside each time. Speed is what ruins it. The head has to agitate the pile long enough to lift grubs and cocoons out of the base of it, and a quick pass over open floor misses the darkest, dustiest strips where almost all of them are.
- Edges before middleSkirting lines, the strip under the bed, behind the lounge, the gap beside the fridge. Work the perimeter of every room first.
- Half speedPush and pull over the same strip several times. One pass at walking pace lifts surface lint and little else.
- Lift what you canSlide the bed out, tip the lounge cushions, move the pet basket, lift small mats and do the floor beneath them.
- Empty it outsideBag and bin it in the outdoor bin straight away, or tip a bagless barrel into a bag outside and seal it.
The outdoor emptying is not fussiness. A vacuum barrel sitting in the laundry is a warm, dark, debris-filled container holding everything you just collected, and some of it is perfectly capable of continuing where it left off. Tipping it into the kitchen bin simply moves the problem to a different room.
Washing runs alongside it. Pet bedding, throw rugs, the cushion covers from the chair the cat owns, and any human bedding in a room where biting happens all go through on the hottest cycle the fabric allows, then into a hot tumble dry if possible. Heat is doing the work here, not detergent. A cool wash and a line dry in Melbourne's winter sun leaves plenty behind in the seams.
Do not shampoo or steam the carpet in the middle of a treatment. Wet cleaning lifts a residual product straight back out of the pile and leaves the fibres damp, which suits the developing stages rather than you. Get the carpets cleaned before the treatment or well after it, and tell whoever is treating the house what you have done.
There is a small bonus in all this that people enjoy once they hear it. The vibration of a vacuum head is exactly the cue that tells a finished flea in a cocoon that something warm has arrived. Daily vacuuming does not only remove the stages you collect; it also coaxes the hidden ones out into the open earlier, onto a floor where something is waiting for them.
Keep it up for a full fourteen days even once the biting stops. The point of the fortnight is not stamina for its own sake. It is the window in which cocoons that were sealed on day one finish opening, and stopping on day five because the house feels clear is the single most common way a job gets undone.
Honest ratings
Why does a flea bomb leave you worse off two weeks later?
Because it treats the air in a room and fleas develop in the floor of it. A fogger releases a mist that drifts up and settles on whatever faces the ceiling, so the top of your bench gets a dose and the base of the carpet gets nothing. The cocoons are untouched, and the residue is gone by the time they open.
| Method | What it reaches | Verdict |
|---|---|---|
| Fogger or flea bomb | Adults out in the open on upward-facing surfaces | Poor value, and it coats things you eat off |
| Daily vacuuming | Eggs, grubs and some cocoons, physically removed | Essential, and free |
| Hot washing and hot drying | Everything in the fabric that goes in the machine | Essential for bedding and soft furnishings |
| Supermarket surface spray | Adults that walk over it while it is fresh | Short lived, and it misses the floor base |
| Vet product on the animal | Adults feeding on that animal | Necessary, and not sufficient on its own |
| Treatment of the building | Floors, edges, furniture bases and the ground outside | The part that holds while cocoons keep opening |
If a method cannot reach the base of the carpet pile, it is tidying up, not treating.
Foggers also create problems that have nothing to do with fleas. The mist settles on plates, chopping boards, toothbrushes and the baby's toys unless every one of them is put away, and a pressurised can sitting near a pilot light or a running fridge compressor is a genuine hazard rather than a theoretical one. People usually buy two or three before they ring anybody, which turns a modest bill into a bigger one.
There is a related trap worth naming. A product that kills adult fleas on contact does nothing about the eggs already in the floor, so the label claim is true and the outcome is still disappointing. What changes the arithmetic is something that stops the next generation maturing, which is why the fortnight after a treatment should show a thinning tail of sightings rather than a flat line.
Is it normal to still see fleas a week after a treatment?
Yes, and it is expected rather than a failure. Cocoons that were sealed on the day keep opening afterwards, and nothing applied to a floor gets inside one. Those new arrivals walk out onto a treated surface. Sightings should get thinner day by day; a steady rate after a fortnight is the signal to go back.
The limit
When should you stop doing it yourself and get a technician in?
Call when the fortnight is up and the bites have not thinned, when the floors are bare boards with deep gaps, when something is living under the house, or when the house is being handed back to an agent. Those four situations need either equipment you do not have or access you cannot safely get.
- Fourteen days, no downward trend. Correct vacuuming, hot washing and a vet product should bend the curve. If it has not, something is supplying fleas from a place you have not found.
- Bare boards and deep gaps. Older Melbourne houses hide the population in the joins rather than in pile, and a vacuum head cannot lift anything out of a gap it cannot seal against.
- Something living underneath. A stray cat, possums or rats in a subfloor or roof keep seeding the building no matter what happens on your side of the floorboards.
- A deadline you cannot miss. A final inspection, a settlement, a new baby coming home or a family member reacting badly all turn this into a job with a date on it.
What a proper visit should include is worth knowing so you can tell a real scope from a quick pass. You want the whole affected floor area dealt with rather than one room, the edges and the furniture bases included, the shaded strips outside covered if an animal lives out there, a plain explanation of what the next fortnight will look like, and a written warranty. Covered flea work from Tim carries a 3-month re-treatment guarantee, so fleas active again in a room he already treated bring him back inside those three months without another charge, as long as the household kept up the vacuuming and the animals stayed on whatever the vet supplied.
Tim works alone, which means the licensed technician you speak to is the one who turns up. He covers Melbourne and the ring of suburbs out to about 40 km from town, carries full insurance, and operates on Victorian licence No. 86488, a number the state keeps on a register anyone can search. You can check that number on the public register before you book anybody, which is a habit worth having with any trade that brings chemicals into your house. What the visit actually involves, room by room, is set out on the page for flea treatment for Melbourne homes.
If you would rather talk it through than read about it, send your suburb, your floor types and the number of animals through the booking and quote form. What comes back is a written scope and one price for you to accept or decline, and that price is the one on the invoice.
One last honest note. Nobody can promise a flea-free house forever, because the moment a treated animal walks across a neighbour's lawn the clock starts again. What is reasonable to expect is a floor that stops producing fleas, a household that knows what the next two weeks look like, and a clear answer if it does not go that way.
Questions
Questions people ask about clearing fleas from a house
Do I have to treat the pet as well as the house?
Yes, and through a vet rather than through a pest controller. Each animal under your roof needs a product matched to the species, the weight and the age of that animal, kept going for the full period the vet sets. Tim treats buildings and ground; he does not sell or apply anything to animals.
How long does the whole thing take?
Plan on about a fortnight from the day the house is treated. Biting usually eases within the first few days, then there is a thinning tail of sightings while sealed cocoons finish opening. If the rate is still steady at the end of two weeks, something has been missed.
We have no pets. How did we get fleas?
Almost always from whoever or whatever was there before you, or from an animal living under the house. Cocoons sit shut in an empty building and open when footsteps start. New tenants and new owners get bitten on their first night for exactly this reason.
Does salt or bicarb on the carpet work?
Only weakly, and it has a cost. A dry powder can dehydrate some grubs if it is left undisturbed in the pile, but it does nothing to a cocoon or to the fleas on your animal, and a carpet loaded with powder has to be vacuumed clean before anything else can be applied to it.
Can fleas live in a house with hard floors?
Easily. They shift to the gaps between boards, the dust under the edge of a rug, the join behind the skirting and anything soft in the room. Hard floors are simpler to vacuum and harder to treat, because the targets are narrow lines rather than one even surface.
Is it safe to treat a house with a baby or a fish tank in it?
Usually, provided whoever is doing the work knows in advance. Tell them about babies, pregnancy, asthma, fish, birds, reptiles and chooks when you book. Products on the national register carry label directions that set the rate, the surfaces and how long to stay off a treated floor.
Still being bitten after doing everything right?
Tell Tim what your floors are, how many animals live there and how long it has been going on, and he will tell you what the house needs before any date is held.
Reviewed October 2026 by Tim, licensed pest control operator (Victorian licence No. 86488). Flea biology, bites and household advice: Better Health Channel. Product registration and label directions: APVMA. Choosing a licensed operator: Victorian Department of Health.