How to Get Rid of Fleas in Your House: UK Guide

How to get rid of fleas comes down to order, not strength of chemical. Treat every pet first, clear and vacuum the floors, apply an insecticide that stays active on the floors, then leave those floors alone for two weeks while the last fleas hatch. Skip one of those and the problem is likely to return.

This guide assumes you have already confirmed fleas. If you are not sure, start with our bed bugs vs fleas guide, because bed bugs need a very different plan and treating for the wrong one wastes money.

Our advice is simple. If you caught it early, with one or two rooms affected and a pet you can treat through a vet, do it yourself using the steps below. If people are being bitten repeatedly, several rooms are involved, or you have already tried once and the fleas came back, book flea pest control now. Adur & Worthing Councils give the same advice, and say a professional job will almost always cost less than failed DIY attempts.

Vet treatment is essential, but on its own it deals with the part of the problem you can see. PDSA says only about 5% of an infestation is on the animal and the rest is in the home, and puts it another way on its dog page: 50 fleas on the dog means about 1,000 in the house. Adur & Worthing Councils go further, saying fewer than 1% of the population are adults on the host at any one time. The exact figure varies, but the direction does not.

Fleas pass through four stages. An adult feeds on your pet and, according to Cats Protection, starts breeding within 48 hours. The eggs do not stay on the animal; they drop off wherever it sleeps or walks. Larvae then hatch in the carpet or floor gaps and feed on debris and adult flea droppings, as Oxford City Council explains. They spin cocoons, and the pupae inside wait for the right moment to emerge.

That cocoon is the reason a single treatment rarely finishes the job. Hastings Borough Council says flea eggs and pupae are not affected by insecticide. So even a perfect treatment leaves a batch of future fleas in the floor, and they come out over the following days and weeks. The aim is not to kill everything on day one. It is to make sure that every flea which hatches lands on a treated surface or a treated pet and dies before it can lay eggs.

Sources disagree on the numbers, so do not plan around a single figure. Hastings says a female lays up to 25 eggs a day, Cats Protection says 25 to 50, and Adur & Worthing say 10 to 15. For the whole cycle, Hastings gives 18 to 26 days depending on temperature and Oxford says about a month. On how long pupae can wait, Cats Protection says up to six months, Hastings says nine, and PDSA says fleas and eggs can survive up to a year. The BPCA's technical manager gives two weeks to eight months. Plan for a month of follow-through and several months of watching.

Start here, on the same day for every animal. PDSA says to treat all cats, dogs and rabbits in the house together, ideally with a prescription product from your vet. Treating only the pet you saw scratching leaves a walking food supply for new fleas. A pet that never goes outdoors still counts: Cats Protection points out that people can carry fleas in, so indoor cats get them too.

Our recommendation is a prescription product. Cats Protection says supermarket and pet shop products are less effective and that prescription treatments protect for up to a few months, depending on the product. PDSA says a vet can usually supply one without an appointment if your pet was seen recently, and that the pet needs to be examined if it has not been seen for a while or has sore skin. Do this before your flea treatment appointment; Redbridge Council puts it first on its preparation sheet.

Ask about worms at the same visit. Fleas can carry tapeworm, which a pet swallows while grooming, so Adur & Worthing Councils and PDSA both link the two. Kittens need extra care: Cats Protection and PDSA warn that a bad infestation can cause anaemia in a kitten, so take a kitten that seems unwell to the vet, and use only a product suitable for its age. For rabbits, ask your vet which product to use.

Apply spot-ons properly, because a wasted dose costs you a month. The Veterinary Medicines Directorate published advice in May 2026: part the fur, apply to the skin and not the fur, and leave the spot alone until it has dried. Wash your pet in the days before applying rather than afterwards, keep it out of ponds and rivers for at least 4 days, and put used pipettes in the bin, not down the sink. That advice exists because fipronil and imidacloprid, two common flea ingredients, have been found in UK waterways.

This is the one part of the job where a mistake can kill. Permethrin is an insecticide found in many dog flea products and in some household flea sprays and powders. PDSA calls it extremely poisonous to cats and says untreated poisoning is usually fatal. The usual cause is a dog spot-on put on a cat by accident. Cats Protection is equally blunt: never use a dog flea treatment on your cat.

A cat does not need to be treated directly to be harmed. PDSA says cats can be exposed by grooming a treated dog or sharing its bed. If you have both, ask your vet for a dog product without permethrin. If you do use one, PDSA says to keep the cat away from the dog for 72 hours after application.

Household sprays are a different case. PDSA says permethrin sprays can be used in the home because they are not applied to the animal, but all animals must be out of the room first. It also says the sprays are extremely toxic to fish and birds, so fish tanks and birds need the same care.

Preparation decides whether treatment works, and councils take it seriously. Redbridge Council says skipping any step compromises the treatment, and Croydon's leaflet reserves the right to withdraw if advice is not followed. Whether you are spraying yourself or booking a professional, the insecticide has to reach the floor and the edges of the room, so the job is to clear them.

Start with the room where the pet sleeps, and wash first, because bedding left on the floor will be in the way when you vacuum. PDSA and Oxford City Council say to wash pet bedding at 60°C, while Adur & Worthing say the hottest wash possible. Croydon's leaflet goes wider, asking for floor-length curtains, chair covers, pillows and throws to be washed too, then tumble dried on high for at least 40 minutes.

Vacuuming is the most useful thing you can do for free, but the timing matters more than the effort. Do it thoroughly just before treatment. Then stop for two weeks.

It does more than tidy up. In a study at Ohio State University, vacuuming killed an average of 96% of adult cat fleas and all the pupae and larvae in a small set of tests. The tests used one upright machine on one tightly woven carpet, the eggs were not tested, and a vacuum manufacturer part-funded the work, so read it as encouraging, not as proof that your carpet is clear. Deep pile, gaps and corners are harder than a test sample.

Vacuuming has a second job before treatment. Natalie Bungay, technical manager at the BPCA, explains in PPC Online that the vibration stimulates adults to leave their cocoons, which exposes them to the insecticide, and that it lets treatment reach the base of the carpet fibres. Coventry City Council goes further, advising people to vacuum daily and mop floors while they wait for the appointment. We recommend the same.

After treatment, stop. Hastings, Redbridge, Croydon and Gravesham all say two weeks without vacuuming, because it can lift the insecticide off the floor. The sources do disagree here: University of California advice says to keep vacuuming daily or every other day. For a UK residual treatment, follow your sheet and leave the floors alone for 14 days. If you used a shop spray, follow its label, which may differ.

Empty the machine outside every time. Coventry says to put the bag straight into an outside bin, and Croydon warns that the fleas will still be alive. Cats Protection and Adur & Worthing Councils also say to dispose of the bag. University of California advice notes that recent studies question whether destroying bags is needed, but emptying outside takes a minute and costs nothing, so do it anyway.

Yes for small problems, if you buy the right product and use it the right way. A good household flea spray from a vet practice is a reasonable DIY tool. Gravesham Borough Council warns that supermarket treatments may be ineffective, and suggests asking a vet practice, even if you have no pet. Cats Protection says the same: ask your vet which spray to use if you are unsure.

Know what the spray can reach. Cats Protection says home sprays kill eggs and larvae, while Hastings says eggs and pupae are not affected by insecticide. The difference is largely in the ingredients. University of California advice says to pick a product with an insect growth regulator (IGR), such as methoprene or pyriproxyfen, because plain insecticides often miss larvae at the base of carpet fibres. It adds that IGRs do not kill pupae either, so fleas can still emerge for about two weeks. We found no source saying that a home spray kills a pupa in its cocoon.

Spot spraying rarely works. Apply it to all the floor and soft surfaces the label allows, working from the far corner to the door, and include under furniture and along the skirting. Spraying only the pet's bed leaves the rest of the room breeding. Gravesham says that with DIY products you may need to repeat the vacuum and treat cycle every couple of weeks for several months, which is why DIY can end up costing more in time than it first appears.

We do not recommend shop-bought foggers or flea bombs as a first choice. University of California advice says foggers do not give the coverage or long-term control of direct sprays unless they contain an IGR. A North Carolina State University trial, carried out on cockroaches and not fleas, found that foggers left residue in the middle of floors and worktops and did not reach undersides and hidden spaces. That matters for fleas too, because larvae are under the sofa and along the edge of the room. A hand spray lets you aim at those places.

If you do use one, follow the label to the letter. Gravesham says to remove fish and plants and cover food before using sprays or flea bombs. In a flat, with a cat, or with a fish tank, we would skip the fogger altogether.

A flea exterminator is worth paying for when the job is too big to do thoroughly in one go. Pest control for fleas is not always needed, and DIY can work, but every room has to be treated at the same time. Gravesham Borough Council says to treat all areas on the same day to avoid fleas moving back from untreated rooms. That is easy in a studio and hard in a three-bedroom house with stairs.

Use this test. If you can answer yes to all of the following, try DIY first: fleas are only in one or two rooms, nobody is being bitten repeatedly, you have had vet treatment for every pet, there is no cat at risk from your chosen spray, and you can keep off the vacuum for 14 days. If you answer no to any of them, flea and pest control from a professional is likely to be the better spend.

Be especially careful in rented homes. A landlord or agent may want proof of treatment, so a receipt and a written report are often more useful than a shop spray. And if you are not certain what is biting you, a pest inspection costs less than treating for the wrong insect. Small hairy larvae along the carpet edge are more likely to be carpet beetles, which need a different approach.

Professional flea treatment usually means spraying insecticide on the floors and other surfaces where fleas land. Hastings Borough Council describes a product that is odourless and invisible, and keeps working for about 6 weeks if left undisturbed. Redbridge Council says up to 2 months. What matters is the layer left on the floor.

You will need to leave. Councils differ: Croydon says to stay out of treated rooms for 2 to 3 hours or until dry, Hastings says at least 3 hours, and Redbridge says at least 4. Take pets with you. On your return, open the windows, as Hastings advises. Be careful on damp flooring, as Croydon warns.

Then live normally. This surprises people, but Croydon's leaflet explains why: your movement in the room is what brings fleas out of hiding and into contact with the insecticide. If you shut the room up, they simply wait. So walk through every treated room each day, and let the pets back in once it is dry and aired.

Do not expect silence straight away. Redbridge says numbers usually fall within 2 to 3 days. Hastings calls fleas appearing at 10 to 14 days quite normal, and says the insecticide should deal with them. You may notice them more because they are newly hatched and hungry, and bites can continue for a while. Keep going. Do not respray over the treatment or shampoo the carpets.

At four weeks, take stock. Hastings and Redbridge both ask you to get in touch if fleas are still present at that point. Redbridge also says it makes no revisits in the first two weeks. Hastings adds that it cannot guarantee 100% eradication, and no honest provider should promise it.

Fleas do not need carpet. Oxford City Council says eggs fall into carpets and floorboards alike, and larvae feed on debris in both. Bare boards in an old terrace can hold fleas too, and they are easy to miss because the floor looks clean. Do not assume that a hard floor means a small problem.

Carpet shelters larvae down in the pile. University of California advice says plain insecticides often miss larvae at the base of the fibres, which is why the vacuuming before treatment matters so much. Edges and the space under furniture get the least foot traffic and the least vacuuming, so give them the most attention. Rugs need lifting: treat the floor beneath as well as the rug, and do both sides.

Floorboards hide fleas in the gaps. Croydon's leaflet asks for cracks in floorboards to be vacuumed, and Coventry City Council names floor cracks and wall edges. Run the crevice tool along every gap, then along the skirting. Mopping the surface will not reach them. Sealing the gaps is a sensible job for later, when the treatment has finished, because it removes the hiding place for good.

Laminate, vinyl and tiles are the easiest floors to deal with, as there is less for larvae to live in. Focus on the edges, door bars and any gap at the skirting. Remember that the two-week rule still applies: Hastings says not to wash treated floors for at least two weeks, so spot clean spills only, and keep the mop away from the rest.

This is the classic moving-day surprise. You collect the keys, the flat looks spotless, and within days you have bites around your ankles. It usually has nothing to do with you. Hastings Borough Council says pupae can stay dormant for up to 9 months and hatch when someone enters an empty property, and Adur & Worthing Councils say the triggers include vibration and higher carbon dioxide levels. In other words, your footsteps and your breath.

A previous tenant's pet is the likely source, but it does not have to be recent. Gravesham Borough Council adds that you do not need a pet to get fleas at all, since they can hitch a ride. The good news for a home with no animals is that adult fleas do not last. Gravesham says they survive only a few days without a blood meal, and Adur & Worthing say females need a meal from their natural host to lay viable eggs. The bad news is that you are the only food available, so bites can be intense until the pupae are spent.

Tell the landlord or agent in writing the day you notice, with photos and dates, and ask whether a pet lived there. Then vacuum every floor, and arrange treatment before your rugs and furniture go in, if you can. An empty flat is the easiest home to treat, because the floors are clear already.

If you are a landlord, do not treat a vacant flat and leave it locked. Croydon's leaflet explains that people moving around the room are what bring fleas out, so an empty home can sit quiet until the new tenant arrives. Our suggestion, based on that and on the 6 weeks of residual life Hastings quotes, is to book treatment close to the move-in date, and walk through or vacuum beforehand to disturb the pupae. Pair it with your end of tenancy cleaning checklist, so the carpets are cleaned before treatment and not after.

We could not find a UK council or veterinary source that deals with cars, so what follows is our reasoning from the life cycle, not official guidance. If a dog rides in your car, or you carry a cat in a basket, eggs and larvae can end up in the fabric. A car also counts as a place where the pet rests, and Coventry City Council says to focus on those.

Treat the car on the same day as the house. Take out mats, blankets, seat covers and the pet carrier. Wash anything washable at 60°C, as PDSA advises for bedding. Vacuum the seats, the seams, the footwells, under the seats and the boot, using a crevice tool, then empty the machine outside. Repeat every few days for two to four weeks, because this is one place where there is no residual layer to protect, so regular vacuuming is the right choice.

Do not set off a fogger in a car. Only use a spray if the label says it can be used in a vehicle, and let the interior dry and air fully before any person or animal gets in. If the car is only lightly affected, vacuuming and a treated pet will usually be enough, as Gravesham's point about adult fleas surviving only a few days without blood applies here too. Leased or company cars may have their own rules on chemicals, so check first.

If fleas reappear, work out which of two things is happening. Either the old infestation has not finished, or a new one has arrived. The date tells you most of it. Fleas within two weeks of treatment are usually the old batch hatching. Fleas after four weeks, or after a clear spell, need looking at.

Check the pet's protection first. Cats Protection says a cat can pick up fleas from other cats, catteries and the vet, as well as rodents it chases. So a single lapsed dose can restart the whole cycle. PDSA says to keep checking and treating pets and the home regularly once the fleas are gone, and Adur & Worthing suggest de-fleaing about once a quarter, though the right interval depends on the product. Follow your vet's schedule.

Gardens are a less common cause than people fear. University of California advice says treating the pet normally prevents reinfestation from outdoors, and that treating a whole lawn is rarely needed. Sunshine and foot traffic make life hard for larvae, so shaded spots where animals rest are what matter. Keep those clear, and do not spray the garden. If your cat is bringing in mice, that is a separate job; see how to get rid of mice.

Resistance gets mentioned a lot. University of California advice says many field populations resist pyrethroids such as permethrin, but that is American outdoor data, and we found no UK figure for it. Do not assume it is resistance until you have ruled out the causes in the table below.

If the bites continue and you have never actually seen a flea, stop treating and check again. Bed bugs, mites and other causes can look similar, and bed bug treatment is planned quite differently. Our guide on how to get rid of bed bugs sets that out.

In England, it depends on the cause. Citizens Advice says tenants are usually responsible if the problem came from something they did or failed to do. Landlords are usually responsible if the tenancy agreement says so, or if it came from unrepaired defects, and may also be responsible if the infestation makes the home unsafe. A landlord is generally only responsible once they know, so report it straight away and in writing. Citizens Advice adds that it does not matter whether the infestation was there when you moved in or appeared later.

The law sits behind that. Section 9A of the Landlord and Tenant Act 1985, added by the Homes (Fitness for Human Habitation) Act 2018, requires most landlords in England to keep a home fit to live in, and exposure to pests is listed in the Housing Health and Safety Rating System regulations. A landlord is not liable where the problem is wholly or mainly down to the tenant's own breach. Council and housing association tenants can also rely on Awaab's Law for emergency hazards: Citizens Advice says the landlord must make the home safe within 24 hours. Some social tenants get pest control at no direct cost, as Tower Hamlets Council notes, so ask your housing officer before paying.

Pets add a wrinkle. Since 1 May 2026, GOV.UK says renters can ask to keep a pet and landlords must reasonably consider it, with Battersea noting a 28-day deadline for replying. Fleas from your own pet will usually be your cost. But a tenancy clause that makes you hire a pest controller when you leave is a different matter. Section 1 of the Tenant Fees Act 2019 stops a landlord requiring a tenant to enter a contract with a third party for a service. We read that as ruling out a clause that forces you to hire a pest controller. Your landlord can still claim damages for a genuine breach, under Schedule 1, and must provide evidence to support any deduction from the deposit, as the government's statutory guidance says.

So if your pet did have fleas, deal with them properly and keep the paperwork. It is much better to hand back a home with a dated receipt than to argue about it at checkout. Time it carefully, because carpets that cannot be vacuumed for 14 days will clash with an end-of-tenancy clean. This is general information and not legal advice; Citizens Advice, Shelter or a solicitor can advise on your own tenancy. Our pest control cost guide has more on who pays for other pests.

Flea pest control cost in London ranges widely, and the headline figure is not always comparable. Tariffs are charged per visit, per room band or per bedroom, so check what is covered. Councils are a useful benchmark, because their prices are published. Among those we checked, Tower Hamlets charges £81 per visit, Hounslow £165 for up to two bedrooms, and Redbridge £200. Some council prices may not apply to you if you live outside the borough.

Three things move a flea exterminator price in the UK more than any others: the number of rooms, the amount of carpet and soft furnishing, and whether a further visit is needed. A one-room problem in a studio and a whole-house job in a three-bedroom home are different jobs. When you compare quotes, ask what happens if fleas are still there at four weeks, as that is where the real differences between providers appear. Redbridge, for example, does not charge for a repeat visit if a treatment fails, provided it falls within four weeks.

Budget for the vet as well. Pet treatment is a separate cost from pest control, so add it to your total. If you are weighing DIY against a professional, include a spray for every room, a repeat treatment, and the vet. For a wider picture, our pest control cost guide sets flea prices beside every other pest, and you can compare services on our pest control page.

Tell us which rooms are affected, the type of flooring, how many pets you have and whether they have been treated. We review the preparation you will need, then confirm the price, the visits and what is included in writing before anything is booked. You get a safety report with the work.

Flea treatment starts from £89, which is a starting rate covering an initial inspection, targeted treatment and a written guarantee. The final price depends on the number of rooms, carpets and soft furnishings, pet areas and whether a further visit is needed. If you want more than one visit, our multi-visit packages for a one-bedroom property are £160 to £190 for two visits, with a 1-month written guarantee, and £210 to £230 for three visits, with a 3-month written guarantee. Packages include follow-up and proofing advice. Our prices page has the full list.

We are based on Clements Road in Ilford, cover London and carry public liability insurance. Our Ilford pest control page sets our prices next to Redbridge Council's line by line. Our phone lines are open Monday to Saturday, 8am to 8pm, or you can contact us online. Your pets still need treating through your vet, and we will ask about them before we book.