A pipette or a tablet for dogs: which should you choose?

A pipette or a tablet: which is more effective? There is no one-size-fits-all answer. ‘Pipette’ and ‘tablet’ describe the method of administration, but do not specify which parasites the product combats, how long it provides protection for, or whether it has a repellent effect.

Firstly: internal and external parasites

Fleas, ticks and some mites are external parasites. Roundworms, tapeworms and other worms are internal parasites. However, not every pipette acts solely externally, nor is every tablet effective against intestinal worms. There are topical formulations with systemic action and tablets that treat fleas and ticks.

Therefore, always check the target parasite, the active ingredient, the authorised duration of action and the animal’s characteristics.

The most common mistake: an internal worming treatment does not kill fleas

This is the most common misunderstanding. Many people give their dog a worming tablet and assume that it is now protected against everything. It isn’t. An internal worming treatment acts on worms in the gut and, in most cases, has no effect whatsoever on fleas or ticks — they are different products with different active ingredients.

The reverse is also true: a flea treatment does not treat roundworms. There are combination products that cover both types, but this must be stated on the packaging — you cannot simply assume it. If you’re unsure about what your product covers, the right question to ask your vet isn’t “is this any good?”, but “which parasites does this treat, and for how long?”.

Advantages and limitations of spot-on treatments

Spot-on treatments are applied directly to the skin. Depending on the active ingredient, they may spread across the skin and coat, be absorbed by the body, or act as a repellent.

• They can be useful for dogs that refuse to take tablets.
• Some reduce the attachment or bites of certain vectors.
• The product must be applied to the skin at the specified site.
• Baths, anti-parasitic shampoos or swimming may interfere with certain products.
• Some substances intended for dogs are dangerous to cats.

Serious warning: using a dog spot-on treatment on a cat can be fatal

That last point deserves a section of its own, as it is a genuine and preventable emergency. Many anti-parasitic treatments for dogs contain permethrin. Dogs tolerate it well; cats do not — they metabolise it much less efficiently, and a dose formulated for dogs can cause severe poisoning.

Symptoms usually appear within the first few hours, although they can take up to 24 hours to develop: excessive salivation, twitching of the face and ears, generalised muscle tremors, extreme sensitivity to touch, high fever, vomiting and, in severe cases, seizures.

What to do: this is a veterinary emergency — do not wait to see if the cat gets better. Call the vet immediately and tell them exactly which product was applied (take the packaging with you). With early treatment, the prognosis is usually good; without treatment, it can be fatal within a few hours.

Be aware of one detail that is often overlooked: the risk isn’t limited to direct application. A cat living with a treated dog that nests against or licks the dog’s fur in the hours that follow may also become poisoned. If you have both animals at home, always check with your vet whether the dog’s product is safe for them to be together and keep them separate until it has dried.

Advantages and limitations of tablets

Tablets can be effective against internal parasites, external parasites or both, depending on their composition.

• They leave no residue on the coat.
• Their effectiveness does not usually depend on bathing or swimming.
• You must ensure that your dog has swallowed the full dose.
• If the dog vomits after taking the dose, you should contact your vet.
• Many systemic products are not repellents: the parasite may need to attach itself before dying.

How to apply the pipette correctly

A poorly applied pipette is a waste of money — and the most common mistake is leaving the product on the coat instead of applying it to the skin.

• Part the fur with your fingers until you can see the skin, and apply the product there. If the liquid spreads through the fur, it won’t be distributed as it should.
• Choose a spot that your pet cannot reach with its tongue — usually the base of the neck, between the shoulder blades. For larger dogs, the package leaflet may specify several points along the spine.
• Apply to dry fur and observe the bathing interval specified in the package leaflet, both before and after application.
• Leave it to dry without touching it, and keep other animals away until it is dry, so they do not lick one another.
• Use the correct pipette for the dog’s weight. Do not split a large pipette between two small dogs or combine two small ones — the concentration is not linear.

How long does it take for the pipette to take effect?

The time cannot be determined simply because it is a pipette. A distinction must be made between:

1. onset of action — when it starts to work;
2. rate of elimination — how long it takes to reduce the number of parasites;
3. duration of protection — how long it remains effective.

Depending on the product and the parasite, the onset of action may occur within hours or in the first few days, whilst protection may last for weeks or months. The relevant information can be found in the product leaflet recommended by your vet.

What about anti-parasite collars?

They are a third option, often overlooked in this comparison. The advantage is their duration: some remain active for several months, which solves the problem for those who forget to reapply the treatment every month.

However, they do require some care: they must fit snugly around the neck to release the substance correctly; depending on the model, they may lose effectiveness with frequent bathing; and it is important to check that they are safe in homes with small children or other animals that might lick the dog. As with everything else, it is not the format that matters — it is the active ingredient and the specific risk to the animal.

How can you choose safely?

The vet should take into account travel, the region, hunting, a raw food diet, bathing frequency, living with cats or children, previous illnesses, and the owner’s ability to adhere to the treatment schedule. The best product is one that covers the dog’s actual risk and can be administered correctly.

Never combine products on your own initiative: different substances may overlap or be incompatible.

There’s also a practical point to bear in mind: even the best antiparasitic treatment in the world is useless if you miss the follow-up doses. If you know you tend to forget, tell your vet — a long-acting product might make more sense than a monthly one that you only manage to give half the time.

Sources

• ESCCAP — ectoparasite control
• ESCCAP — worm control
• ASPCA Animal Poison Control — permethrin (spot-on) poisoning in cats

Products to support your pet’s care routine are listed in the dog grooming section.

Information last updated in August 2026. The choice of antiparasitic treatment should be made in consultation with your vet.