\u27a1\ufe0f Fleas primarily target dogs and cats, but can also bite humans.
\u27a1\ufe0f 95% of fleas live in the environment (carpets, skirting boards, baskets, textiles) and only 5% on animals.
\u27a1\ufe0f A female flea can lay 20 to 50 eggs per day, which explains how quickly an infestation can spread.
\u27a1\ufe0f To get rid of fleas permanently, you need to treat both the animal and the home at the same time and put preventive measures in place.
\u27a1\ufe0f Natural solutions can help, but they are not enough on their own in the case of an established infestation.<\/p>\n\n\n\n
<\/p>\n<\/div>\n<\/div>\n\n\n\n
\ud83d\udc49 See also: <\/strong>Understanding the biology and behaviour of fleas<\/a><\/p>\n\n\n\n Pets are the main way fleas get into your home.<\/strong><\/p>\n\n\n\n Dogs, cats, ferrets, or any furry animal are very popular hosts for these tiny parasitic insects.<\/p>\n\n\n\n A simple walk, contact with another animal with an infestation, or a visit to a contaminated place (park, garden, stairwell) is enough to bring fleas home.<\/p>\n\n\n\n Once on the animal, they feed, lay eggs, and quickly colonise the environment.<\/p>\n\n\n\n Fleas may also be present in the home before you even arrive:<\/strong><\/p>\n\n\n\n The purchase of contaminated second-hand furniture or clothing is also a source of contamination.<\/p>\n\n\n\n Finally, fleas can cling to the soles of your shoes<\/strong>.\u00a0<\/p>\n\n\n\n \u27a1\ufe0f Note: 95% of fleas live in the environment (carpets, skirting boards, baskets, rugs, etc.) and only 5% on animals. It is therefore possible to have fleas in your home without immediately seeing them on your pet.<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n<\/div>\n<\/div>\n\n\n\n A flea infestation may go unnoticed at first, but can quickly become invasive. Here are some signs to look out for \ud83d\ude09.<\/p>\n\n\n\n A dog or cat that suddenly starts scratching compulsively most likely has fleas.<\/p>\n\n\n\n Other signs may alert you:<\/p>\n\n\n\n By parting your pet’s fur, particularly around the neck, back or base of the tail, you may see small, dark brown fleas moving quickly or jumping.<\/p>\n\n\n\n You can use a flea comb<\/strong> (available from pharmacies) to be sure.<\/p>\n<\/div> Fleas can sometimes bite humans. These bites are usually multiple and often clustered on:<\/p>\n\n\n\n These bites are very pruritic (they itch intensely) and may remain visible for several days. Repeated scratching increases the risk of irritation or infection.<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n<\/div>\n<\/div>\n\n\n\n Another tell-tale sign is the sensation of an insect jumping on your skin or clothing.<\/strong> This is typical of fleas, which are capable of jumping several dozen centimetres.<\/p>\n<\/div><\/div>\n\n\n\n Fleas leave behind small droppings that look like black dots.<\/p>\n\n\n\n They can be found:<\/p>\n\n\n\n \u27a1\ufe0f Tip:<\/strong> place these black dots on damp paper. If they turn reddish, they are indeed digested blood… and therefore flea droppings.<\/p>\n<\/div> Be aware that flea infestations can spread very quickly. An adult female can lay 20 to 50 eggs per day. It is essential to treat both your pets and your home to get rid of them.<\/p>\n\n\n\n White vinegar is an effective natural flea repellent thanks to its acidic smell.<\/p>\n\n\n\n It does not kill them directly, but it does scare them away and helps to clean areas affected by infestation.<\/p>\n\n\n\n Another useful feature is that it can dissolve the cuticle (the layer that protects the flea’s body) and make them vulnerable.<\/p>\n\n\n\n Directions for use: mix 50% water and 50% white vinegar, then spray onto floors, skirting boards, carpets, pet baskets and high-traffic areas.<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n Lemon is also an effective natural flea repellent.<\/p>\n\n\n\n Directions for use: prepare a lemon spray by boiling lemon slices in \u00bd litre of water. Leave to infuse for a day, then spray onto surfaces (not your pets!).<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n<\/div>\n<\/div>\n<\/div> Certain essential oils have a recognised repellent effect against fleas and ticks:<\/p>\n\n\n\n Directions for use:<\/strong><\/p>\n\n\n\n \u26a0\ufe0f Caution<\/strong>: never apply essential oils directly to your pets. Some varieties are toxic to cats.<\/p>\n\n\n\n It is advisable to seek advice from your vet.<\/p>\n<\/div><\/div>\n\n\n\n Food-grade (uncalcined) diatomaceous earth is a highly effective pesticide. It is often used against bed bugs<\/a>.<\/p>\n\n\n\n Specifically, it acts mechanically by drying out adult insects.<\/p>\n\n\n\n Directions for use: sprinkle a thin layer in your pet’s basket and in areas where they frequently walk. You can also sprinkle it along skirting boards, under furniture, in cracks and crevices, and on carpets (vacuum after a few days). Leave for 48 to 72 hours before cleaning.<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n<\/div>\n<\/div>\n\n\n\n Another solution: apply food-grade diatomaceous earth to your dog’s or cat’s coat. Massage it in, then brush to remove any excess.<\/p>\n<\/div> Here is an inexpensive flea repellent. Coffee grounds act as a repellent.<\/p>\n\n\n\n Directions for use:<\/strong> gently rub your cat or dog’s coat with coffee grounds, then rinse.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n Key points:<\/strong><\/p>\n\n\n\n These traditional remedies for fleas are inexpensive and safe, but are not sufficient in cases of advanced infestation. To get rid of fleas permanently, it is essential to take action on several fronts:<\/p>\n\n\n\n Thorough cleaning will eliminate most adult fleas, but more importantly, it will remove the eggs, larvae and faeces that perpetuate the infestation.<\/p>\n\n\n\n A vacuum cleaner is your best weapon against fleas. Vacuum slowly, using a narrow nozzle if possible to reach into corners. Once you have finished, remove the bag, place it in an airtight bag and throw it away immediately in an outside bin.<\/p>\n\n\n\n Repeat this process every day during the treatment phase.<\/p>\n<\/div> After vacuuming, move on to the wet cleaning stage:<\/p>\n\n\n\n This step removes organic residues, flea droppings and larvae invisible to the naked eye.<\/p>\n<\/div><\/div>\n\n\n\n Fleas and their eggs cannot withstand heat.<\/p>\n\n\n\n If possible, then use a tumble dryer at a high temperature, which will increase the effectiveness of the treatment.<\/p>\n\n\n\n Wash at a minimum of 60\u00b0C: sheets, blankets, throws, cushions, baskets, covers, clothing that comes into contact with animals.<\/p>\n<\/div> Proper grooming can eliminate most adult fleas, relieve itching and limit the spread of parasites in your home.<\/p>\n\n\n\n The flea comb has very fine teeth, capable of capturing fleas trapped in the coat.<\/p>\n\n\n\n Repeat the operation daily for several days in addition to other treatments.<\/p>\n\n\n\n Comb your dog or cat over a sink or a container of soapy water.<\/p>\n<\/div>\n<\/div>\n\n\n\n Focus on the areas where fleas tend to concentrate most: the neck, base of the tail, belly, back of the ears and folds of the legs.<\/p>\n<\/div><\/div>\n\n\n\n An anti-flea shampoo should not be chosen at random.<\/strong> Ask your vet or chemist for advice.<\/p>\n<\/div>\n<\/div>\n\n\n\n This type of product helps to:<\/p>\n\n\n\n \u26a0\ufe0f Never use flea shampoo for dogs on cats: some active ingredients are toxic to felines.<\/p>\n\n\n\n After each grooming session, take the time to inspect your pet:<\/p>\n\n\n\n During the flea treatment phase, limit your pets’ movements. The less they move around, the less fleas, eggs and larvae will spread throughout the house.<\/p>\n\n\n\n Sofas, armchairs, bedrooms, etc. are off limits!<\/p>\n<\/div><\/div>\n\n\n\n For dogs, treatment must be tailored to their size, age and lifestyle. A very active dog or one that spends a lot of time outdoors will not have the same needs as a dog that lives indoors.<\/p>\n\n\n\n Spot-on pipettes<\/strong><\/p>\n\n\n\n Applied to the skin between the shoulder blades or at the base of the neck, they spread the product over the entire body.<\/p>\n\n\n\n \u2705 Curative and preventive action<\/p>\n\n\n\n \u2705 Easy to apply<\/p>\n\n\n\n \u2705 Protection for 3 to 4 weeks<\/p>\n\n\n\n Flea collars<\/strong><\/p>\n\n\n\n They slowly release an active substance against fleas (and sometimes ticks).<\/p>\n\n\n\n \u2705 Long-lasting protection<\/p>\n\n\n\n \u2705 Practical solution for dogs that go outside a lot<\/p>\n\n\n\n Flea tablets<\/strong><\/p>\n\n\n\n These treatments work quickly after ingestion. The flea dies when it bites the dog.<\/p>\n\n\n\n \u2705 Very fast-acting<\/p>\n\n\n\n \u2705 Ideal for severe infestations<\/p>\n\n\n\n \u2705 Leaves no residue on the coat<\/p>\n\n\n\n Good to know<\/strong>: tablets are particularly useful when fleas are already well established in the home.<\/p>\n<\/div>\n<\/div>\n<\/div> Flea treatment for cats must be chosen with great care<\/strong>. Some products used on dogs are<\/strong> toxic to cats<\/strong>. It is therefore essential to consult your vet to ensure that the treatment is suitable for your cat’s age, weight and state of health.<\/p>\n\n\n\n Spot-on pipettes<\/strong><\/p>\n\n\n\n Applied directly to the skin, usually at the base of the neck, they release the active ingredient into the skin’s lipid film.<\/p>\n\n\n\n \u2705 Easy to use<\/p>\n\n\n\n \u2705 Preventive and curative action<\/p>\n\n\n\n \u2705 Protection for several weeks<\/p>\n\n\n\n Flea collars<\/strong><\/p>\n\n\n\n They gradually release an active substance over the entire coat.<\/p>\n\n\n\n \u2705 Long-lasting protection (up to 6 to 8 months depending on the model)<\/p>\n\n\n\n \u2705 Useful for cats that go outdoors<\/p>\n\n\n\n Flea tablets (oral)<\/strong><\/p>\n\n\n\n Administered orally, they work from the inside: the flea dies after biting.<\/p>\n\n\n\n \u2705 Fast-acting<\/p>\n\n\n\n \u2705 Very effective in cases of heavy infestation<\/p>\n\n\n\n Warning<\/strong>: never use flea treatment for dogs on cats. Certain molecules (such as permethrin) can cause serious poisoning.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n Flea sprays are widely used to treat homes. They allow targeted spraying of areas affected by infestation.<\/p>\n\n\n\n They have a dual action:<\/p>\n\n\n\n \u26a0\ufe0f Always ventilate after application and follow the instructions carefully.<\/p>\n<\/div>\n<\/div>\n\n\n\n Insecticide or desiccant powders (some of which are based on silica or diatomaceous earth powder) are useful in hard-to-reach areas. They easily seep into cracks and act on larvae and hidden fleas.<\/p>\n\n\n\n Fumigants diffuse an insecticide in the form of a mist throughout the room. They are used in cases of severe infestation.<\/p>\n\n\n\n Please note that they must be used with caution (empty dwelling, animals and humans absent) and require prolonged ventilation after use.<\/p>\n\n\n\n When the flea infestation becomes uncontrollable, i.e.:<\/strong><\/p>\n\n\n\n A professional pest control technician can then make an accurate diagnosis and use professional insecticide products.<\/p>\n<\/div><\/div>\n\n\n\n All professionals who use insecticide products must hold a valid Certibiocide certificate<\/a> issued by the Ministry of Ecological Transition.<\/p>\n\n\n\n This document certifies that the technician has completed comprehensive training on:<\/p>\n\n\n\nCauses and signs of a flea infestation<\/h2>\n\n\n\n
Where do fleas come from?<\/h3>\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/puce-gros-plan-1024x681.png\")
<\/figure>\n<\/div>\n\n\n\n
How can you recognise a flea infestation?<\/h3>\n\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/chien-qui-se-gratte-1024x680.png\")
<\/figure>Animals that scratch themselves unusually<\/h4>\n\n\n\n
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Visible fleas in the fur<\/h4>\n\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/puces-peau-chien-1024x678.png\")
<\/figure><\/div>\n\n\n\n![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/piqures-puce-1024x775.png\")
<\/figure>Clusters of bites with severe itching<\/h4>\n\n\n\n
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Black droppings in your home<\/h3>\n\n\n\n
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![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/dejections-puces.jpg\")
<\/figure><\/div>\n\n\n\nNatural methods for eliminating fleas<\/h2>\n\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2025\/11\/vinaigre-blanc.jpg\")
<\/figure>1) White vinegar<\/h3>\n\n\n\n
2) Lemon<\/h3>\n\n\n\n
![\"coupelle](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2023\/05\/jus-citron.png\")
<\/figure><\/div>\n\n\n\n![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2025\/06\/huile-tea-tree.jpg\")
<\/figure>3) Essential oils (with caution)<\/h3>\n\n\n\n
\n
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4) Diatomaceous earth<\/h3>\n\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2025\/11\/bicarbonate-soude.jpg\")
<\/figure><\/div>\n\n\n\n![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2025\/11\/marc-cafe.jpg\")
<\/figure>5) Coffee grounds<\/h3>\n\n\n\n
\n
Mechanical means: acting on the environment and animals<\/h2>\n\n\n\n
Thorough cleaning of the home<\/h3>\n\n\n\n
Vacuum<\/h4>\n\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2025\/12\/aspiration-placard.jpg\")
<\/figure><\/div>\n\n\n\n![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/serpillere.jpg\")
<\/figure>Clean the floors: mop + disinfect<\/h3>\n\n\n\n
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Wash all textiles at a high temperature<\/h3>\n\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2025\/06\/machine-a-laver.jpg\")
<\/figure><\/div>\n\n\n\nGrooming your pet<\/h3>\n\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/brosser-chat.jpg\")
<\/figure>Use a flea comb<\/h4>\n\n\n\n
Take a bath with a suitable shampoo<\/h3>\n\n\n\n
\n
\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/laver-chien.jpg\")
<\/figure><\/div>\n\n\n\n![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/chien-canape.jpg\")
<\/figure>Limit your pets’ movements<\/h4>\n\n\n\n
Effective chemical treatments and anti-flea products<\/h2>\n\n\n\n
Flea treatment for dogs<\/h3>\n\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/traitement-puce-chien-1-1024x668.png\")
<\/figure><\/div>\n\n\n\n![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/chat-qui-se-gratte-1024x660.png\")
<\/figure>Flea treatment for cats<\/h3>\n\n\n\n
Treating your home<\/h3>\n\n\n\n
Insecticide sprays<\/h4>\n\n\n\n
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Anti-flea powders<\/h4>\n\n\n\n
Fumigants (insecticide sprays)<\/h4>\n\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/traitement-desinsectisation.jpg\")
<\/figure>When should you call in a professional?<\/h4>\n\n\n\n
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How to choose a trustworthy professional?<\/h4>\n\n\n\n
![\"\"](\"https:\/\/www.sereni-d.com\/wp-content\/uploads\/2026\/02\/professionnel-desinsectiseur.jpg\")
<\/figure><\/div>\n\n\n\n