"My cat keeps scratching, and there are tiny black specks in her fur, is that fleas?" Fleas and ticks are the most common external parasites in cats and dogs in Indonesia. The tropical climate makes their life cycle fast, without proper treatment and prevention, the flea population in a home can explode within weeks.
This article explains how to tell fleas, ticks, and mites apart; the dangers they pose to your pet; safe treatment options; products you MUST avoid (especially for cats); and a routine prevention schedule.
Telling apart fleas, ticks, and mites
These three parasites are often thought to be the same, even though they're handled differently. Wrong identification = wrong medication = no cure.
- Fleas, small insects 1-3 mm, brown-black, fast-moving and jumping. They don't attach permanently to the skin; they jump from spot to spot. The most common species in household cats and dogs: Ctenocephalides felis (the cat flea, also frequently found on dogs).
- Ticks, larger (2-10 mm depending on how engorged they are), flat oval shape, attaching permanently to the skin with their mouthparts. Once they've fed on blood, the body swells up like a bean. Often found on the ears, between toes, on the neck, and in the armpits of dogs.
- Mites, very small, not visible to the naked eye (a microscope is needed). They cause skin diseases such as scabies (Sarcoptes), ear mites (Otodectes in the ears), and demodicosis. Treatment differs from fleas/ticks, it needs veterinary confirmation via a skin scraping.
If you see something moving fast in your pet's fur = most likely fleas. If there's a "mole" that's attached, not moving, and getting bigger = a tick. If there's severe itching but no parasite is visible = suspect mites, which needs a veterinary examination.
The flea life cycle: why treatment takes time
Something that often frustrates owners: "I already used flea medication, so why are they still here?" The answer lies in the flea life cycle, which has 4 stages:
- Egg, laid in the pet's fur, falls onto carpets, beds, sofas
- Larva, hatches within 2-14 days, lives in crevices in the floor and fabric
- Pupa, a durable cocoon (can wait months for optimal conditions)
- Adult, jumps onto the pet to feed on blood and mate
What you see on the pet is only 5% of the total flea population, the other 95% (eggs, larvae, pupae) are in the home environment. That's why flea treatment takes 8-12 weeks until all life-cycle stages are finished. Stopping treatment partway = the population comes right back.
The dangers of fleas and ticks: not just itching
Many owners think fleas are just a cosmetic problem. But the health impact can be serious:
- Flea allergy dermatitis (FAD), flea saliva triggers an allergic reaction in sensitive pets. Symptoms: severe itching at the base of the tail, the lower back, and the belly. The pet can scratch until there are wounds and secondary infection. Just 1-2 flea bites are enough to trigger a reaction.
- Anemia in kittens and puppies, fleas feed on blood, and a small kitten with a low total blood volume can develop severe, even fatal, anemia if the flea infestation is massive.
- Tapeworm, fleas are a vector of Dipylidium caninum. A pet that bites its fleas while grooming can become infected with tapeworm. (Details in the sibling article about worms.)
- Tick-borne disease, ticks carry serious diseases via their bite: Ehrlichia canis, Babesia canis, and Hepatozoon canis in dogs. Symptoms range from fever, lethargy, and reduced appetite, to blood-clotting disorders. A tick attached for >24-48 hours increases the risk of transmission.
- Zoonosis, fleas can also bite humans (especially young children). They don't live permanently on human skin, but their bites cause itchy welts.
Signs a pet has fleas or ticks
- Excessive itching, scratching, biting at the base of the tail, or compulsive licking in a particular area
- Salt and pepper specks (flea dirt), small black specks in the fur that are actually flea feces (digested blood). The test: pick it up with a damp cotton swab → if it turns rust-red = positive flea dirt
- Visible jumping fleas, especially around the neck, belly, and base of the tail
- Attached ticks, look like a hanging "mole", usually on the ears, between toes, in the armpits, or on the neck
- Hair loss in a symmetrical pattern, especially at the base of the tail (characteristic of FAD)
- Red, scaly skin, from repeated scratching
- Pale gums (anemia), especially in kittens with a heavy infestation
SAFE treatment options
Below are flea and tick products commonly available in Indonesia and used by veterinarians. The choice depends on the species, body weight, lifestyle, and medical condition of your pet.
Spot-on (drops on the back of the neck)
- Frontline Plus, contains fipronil + (S)-methoprene. Kills adult fleas + larvae + eggs. Safe for cats and dogs 8 weeks and older. Applied once a month.
- Advantage / Advocate, contains imidacloprid (Advantage) or imidacloprid + moxidectin (Advocate). Kills fleas fast (within 12 hours). Advocate also has an effect against worms and ear mites.
- Revolution / Stronghold, selamectin, broader spectrum (fleas + ear mites + some internal worms).
Oral (chewable tablets)
- NexGard, afoxolaner, a meat-flavored chewable tablet for dogs. Kills fleas and ticks within 24 hours. Given once a month.
- Bravecto, fluralaner, a chewable tablet for dogs with a duration of 12 weeks (3 months) per dose. There's also a topical version for cats (Bravecto Plus). High convenience because you don't need to remember a monthly dose.
- Simparica, sarolaner, monthly for dogs.
Shampoo and collars
- Anti-flea shampoo, works during the bath, but the effect lasts only a few days. Suitable for an initial knock-down with a heavy infestation, not for long-term prevention.
- Collar (Seresto, Scalibor), collars containing imidacloprid + flumethrin (Seresto) or deltamethrin (Scalibor), with a 6-8 month effect. WARNING: Scalibor contains deltamethrin, which is TOXIC to cats, do not use it on cats or in a home with cats that could contact a dog's collar.
The best choice depends on your pet's specific condition. Consult a veterinarian before buying, pet shops sometimes recommend products based on margin, not on what fits best.
UNSAFE treatment options, especially for cats
This section is important to read. Wrongly using a dog product on a cat can be fatal within hours.
Permethrin in cats = FATAL
Permethrin is a pyrethroid-class insecticide that is safe to use on dogs. But cats lack enough of the liver enzyme (glucuronyl transferase) to metabolize permethrin. In cats, permethrin causes:
- Tremors (uncontrolled shaking)
- Recurrent seizures
- Hyperthermia (extreme rise in body temperature)
- Death within hours without medical intervention
Many anti-flea products for dogs contain high concentrations of permethrin (45-65%). If you wrongly use a dog product on a cat, or the cat licks the skin of a dog that was just given a permethrin product, the cat can suffer acute poisoning. This is an emergency.
Never:
- Use a dog spot-on on a cat, always check the label for "for cats only" or "for dogs only"
- Use a Scalibor collar (deltamethrin) in a home that has a cat
- Buy flea medication on a marketplace without checking the active ingredient, many cheap imported products contain high permethrin
If you've already used it and the cat shows tremors or seizures, get to the nearest veterinarian immediately, this is an emergency case requiring decontamination (a liquid-soap bath) + supportive care (IV fluids, anti-seizure medication, temperature monitoring) within the next 1-2 hours.
What else to avoid
- Household insecticides / agricultural pesticides, Baygon, Hit, or any insecticide designed for household insects is NOT for pets. Acutely toxic.
- Organophosphates, an old drug class still in circulation (chlorpyrifos, dichlorvos). Narrow safety margin, banned in many countries.
- "Folk remedies", kerosene, tobacco-soaked water, garlic rubs. Ineffective, and some are actually toxic to pets.
Safe principle: if a product doesn't have a clear species label and body-weight dosing, don't use it.
How to remove an attached tick
If you see a tick attached to your pet, don't pull carelessly, the tick's mouthparts can break off and remain in the skin, triggering infection.
- Use fine-tipped tweezers or a dedicated tool (tick remover)
- Grip the tick as close to the skin as possible (at its head/mouthparts, not the large body)
- Pull slowly upward with steady pressure, do not twist or jerk
- After the tick is out, clean the bite area with a mild antiseptic (diluted povidone-iodine or chlorhexidine)
- Dispose of the tick properly, put it in alcohol or soapy water; don't crush it with your fingers
If there are many ticks (>5-10) or in difficult spots (inside the ear, narrow gaps between toes), it's safer to have a vet remove them all at once and start systemic treatment. For severe tick infestation, combining manual removal + systemic medication (NexGard / Bravecto) gives the fastest effect.
Environmental treatment: don't forget the home
Because 95% of the flea population is in the environment (not on the pet), environmental treatment must run in parallel with treating the pet. Without it, fleas come back from the carpet and sofa after the medication wears off.
- Wash all the pet's fabrics, blankets, pillows, cat beds, clothing, sofa covers, with hot water (temperature >50°C kills flea eggs and larvae)
- Vacuum carpets and furniture crevices, especially carpet edges, under beds, sofa gaps. Throw the vacuum bag outside immediately (if using a bagless vacuum, clean it right away)
- Sun-dry the pet's bedding, UV helps kill eggs and larvae
- Treat the yard / garden if the pet is often outdoors, spray a garden-specific insecticide in shaded areas and long grass
- Consider an IGR (Insect Growth Regulator) such as pyriproxyfen, which specifically blocks flea metamorphosis in the environment, available as a household spray or fogger
Environmental treatment needs to be repeated every 2-3 weeks for 8-12 weeks until the flea cycle is fully broken.
Routine prevention: monthly vs every 3 months
Once an infestation is successfully eliminated, routine prevention is far cheaper and less hassle than treating an outbreak. Schedule options:
- Monthly, spot-on (Frontline Plus, Advantage) or oral (NexGard, Simparica). Suitable if you don't mind remembering a dose every month. Convenient for pets that are bathed regularly, because the effect doesn't wash off with bathing (except shampoo).
- Every 3 months, oral Bravecto for dogs or topical Bravecto Plus for cats. Suitable for busy owners or those who often forget a monthly dose. One application lasts 3 months.
For dogs in areas with high tick prevalence (Bogor, Depok, homes with large yards), tick prevention is more crucial, choose a product effective against ticks (NexGard, Bravecto, Simparica), not just fleas.
For indoor-only cats, the risk is lower but prevention is still needed, fleas come in via you arriving from outside or another dog in the home.
Fleas and ticks FAQ
How long does flea treatment take to be completely clear?
Because of the flea life cycle, it takes 8-12 weeks of consistent treatment (pet + environment) until all stages are finished. Don't stop at week 2 even if you no longer see fleas on the pet, eggs and pupae in the carpet need more time to hatch and be eliminated.
Can I use human flea medication on a pet?
No. Anti-flea medication for humans (usually for head lice) is not a formulation that's safe or effective for pets. Cats especially are very sensitive, many human products contain pyrethroids that are toxic to cats.
Are fleas contagious to humans?
Cat/dog fleas can bite humans (young children get bitten most often) and cause itchy welts, but they don't live permanently on human skin. What needs more caution are the diseases fleas/ticks carry, some tick-borne diseases like Lyme (rare in Indonesia) or Anaplasmosis can be zoonotic. Cleaning the home and treating the pet = protecting humans too.
I have a dog and a cat at home, is the treatment different?
Yes, it must be a different product. Choose a product with a clear species label, "for cats" for cats, "for dogs" for dogs. After applying a spot-on to the dog, separate it from the cat for 24-48 hours so the cat doesn't lick the residue of the dog product. For convenience, the combination of Bravecto Plus (cat topical) + NexGard or oral Bravecto (dog) is often a practical choice.
My pet is itching but I don't see any fleas, what could it be?
A few possibilities: (1) a mild flea infestation that already moved on when you checked, fleas are nimble; (2) FAD from minimal bites by fleas that have gone; (3) mites (Sarcoptes, Demodex, or ear mites) not visible to the eye; (4) food allergy or environmental allergy; (5) a fungal or bacterial skin infection. Consult a vet, this usually needs a skin scraping and microscopic examination for a definitive diagnosis.
Summary
Fleas and ticks aren't merely an itching problem, they can trigger skin allergy (FAD), anemia, tapeworm transmission, and serious tick-borne disease. Effective treatment needs a combination of pet medication (a species-appropriate spot-on, oral, or collar) + environmental treatment (washing fabrics, vacuuming, sun-drying) for 8-12 weeks. For routine prevention, choose monthly (Frontline Plus, NexGard) or every 3 months (Bravecto) based on convenience.
Most important: never use a dog product on a cat, especially anything containing permethrin or deltamethrin. The consequences are fatal.
Want to consult on the most suitable flea/tick product for your pet, or need treatment at home? Contact us on WhatsApp, mention the species, age, weight, and history of previous treatment. The Prabasa Vet team will help find the safest option.
Read also: Worms in Cats and Dogs: Types of Worms, Deworming Schedule, and Medication Options, Signs a Sick Cat Needs a Vet, Complete Pet Care Guide.
Medical references used in this article
This article was prepared with reference to the following sources, verified per clinical statement:
- ESCCAP Guideline 03: Control of Ectoparasites in Dogs and Cats, flea life cycle, environmental treatment, prevention schedule
- Plumb's Veterinary Drug Handbook 7e, monographs for fipronil (Frontline), imidacloprid (Advantage), afoxolaner (NexGard), fluralaner (Bravecto): dosing, indications, species contraindications
- Peterson ME, Talcott PA (eds). Small Animal Toxicology 3rd ed (Blackwell-affiliated), permethrin toxicity in cats: glucuronyl transferase deficiency, clinical signs (tremor/seizure/hyperthermia), decontamination protocol
- Companion Animal Parasite Council (CAPC), General Recommendations on Ectoparasite Control + tick-borne disease (Ehrlichia, Babesia, Hepatozoon)
This article is general guidance based on the international ESCCAP and CAPC guidelines. For selecting a specific product according to your pet's body weight, medical condition, and the combination of pets in your home, consulting a veterinarian is the right step.
