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Antiparasitic for dogs against fleas and ticks: how to choose the right protection for your dog's weight

Fleas, ticks, mosquitoes and biting lice can hitch a ride after a walk in the woods, a trip to the park or simply contact with other animals. With so many products on the market, choosing a dog flea and tick treatment isn't just about comparing a price or a promise on the packaging.

Dog owners often fall into the same traps:

  • Confusing stated duration with permanent protection: a pipette may promise up to four or five weeks against certain parasites, while a collar can claim several months of effectiveness. These durations vary depending on the target parasite, the conditions of use and the level of exposure.
  • Choosing a dose without checking the weight: a product designed for a dog weighing 10 to 20 kg may not be suitable for a heavier or lighter animal. The dosage must always match the weight range stated on the label.
  • Overlooking usage precautions: some treatments are prohibited for cats, very young puppies or animals with irritated skin. And a water-resistant product isn't necessarily suitable for repeated bathing.

The criteria to check before buying

1. Your dog's weight, age and health

Choosing a dog antiparasitic according to weight is first and foremost a safety issue. Spot-on pipettes are generally divided into categories: very small dog, small dog, medium dog, large dog or very large dog.

Also check the minimum recommended age. The products featured here don't all follow the same rules: Beaphar Fiprotec products are not intended for dogs under 8 weeks old, while Advantix and Seresto products indicate use from 7 weeks. If your dog is pregnant or nursing, is already on medication or has a known sensitivity to any ingredient, ask your vet or pharmacist for advice.

2. The parasites targeted

A dog tick treatment doesn't necessarily protect against the same parasites as a broader-spectrum solution. Fipronil, found in Beaphar Fiprotec pipettes, is indicated on the product sheet for fleas and ticks.

Advantix for dogs pipettes contain imidacloprid and permethrin. According to the manufacturer's indications, they target several external parasites, including fleas, ticks, mosquitoes, sandflies, biting lice and stable flies. This coverage can be useful for dogs that regularly visit wooded or rural areas. However, it means you must strictly follow the warnings, particularly the prohibition on use in cats.

3. The method of application and frequency of renewal

A dog flea pipette is applied directly to the skin, usually between the shoulder blades or in several spots, depending on the format. You need to part the fur to reach the skin, then avoid touching the area until it is dry. For some products, it is also recommended not to bathe your pet before and after application.

The dog flea collar works on a different principle: it stays on day to day and must be fitted correctly. The Seresto model featured here is intended for dogs over 8 kg and claims an effectiveness of up to eight months against fleas and ticks, according to the product sheet information. Still, check its fit regularly, especially on a growing dog or one whose coat is changing.

Recommended for: Beginners on a budget
BEAPHAR Fiprotec Spot On for Dogs 2-10 kg 4 Pipettes

BEAPHAR Fiprotec Spot On for Dogs 2-10 kg 4 Pipettes

Why this choice is suitable: This pack of four pipettes is ideal for owners who want to start with a monthly application and easily check that their dog's weight matches the intended dosage.

How this product avoids the trap

The weight range of 2 to 10 kg is clearly stated, reducing the risk of choosing a dose that is too strong or insufficient.

Main advantage and key features

Fipronil as the active ingredient, with a stated duration of up to 5 weeks against fleas and 4 weeks against ticks.

Recommended for: Fans of premium solutions
Seresto Dog Flea and Tick Collar for Large Dogs Over 8 KG

Seresto Dog – Flea & Tick Collar for Large Dogs – Over 8 KG

Why this choice is suitable: This collar is aimed at owners who prefer to avoid monthly applications and want a solution worn daily by a dog over 8 kg.

How this product avoids the trap

The stated duration of up to 8 months reduces the risk of forgetting several renewals. However, the collar must remain properly fitted and be checked regularly.

Main advantage and key features

Imidacloprid and flumethrin in a collar that is claimed to be rain-resistant and odourless.

Recommended for: Specific and intensive use
Advantix medium dog flea and tick treatment 10-25 kg

Advantix medium dog – flea and tick treatment – 10-25 kg – 4 x 2.5 ml pipettes

Why this choice is suitable: This solution is designed for medium-sized dogs that are often exposed during outdoor walks, when their owner wants protection that is claimed to cover several external parasites.

How this product avoids the trap

The product sheet specifies the 10 to 25 kg range, monthly application and the need to avoid contact with the treated area until it is dry.

Main advantage and key features

Four 2.5 ml pipettes and an indication covering six external parasites, according to the manufacturer's information.

Recommended for: Households with multiple dog sizes
BEAPHAR FIPROTEC SPOT ON FOR DOGS 20-40KG 3+1 PIPETTES

BEAPHAR FIPROTEC SPOT ON FOR DOGS 20-40KG 3+1 PIPETTES

Why this choice is suitable: With its 20 to 40 kg range and four pipettes, this pack can suit a large dog whose treatment needs to be planned ahead for several months.

How this product avoids the trap

The dosage of 2.68 ml per pipette corresponds to a precise weight range: this product must not be used for a dog of a different size.

Main advantage and key features

Fipronil dosed at 268 mg per pipette, with a stated duration of up to 5 weeks against fleas and 4 weeks against ticks.

Looking for other options?

We've compiled a complete, real-time updated selection of products that meet these demanding criteria and European safety regulations.

Frequently asked questions about dog antiparasitics

How often should I apply a flea pipette for dogs?

It all depends on the product you use and the parasites targeted. The products featured here generally recommend application every four weeks, while Beaphar claims up to five weeks of protection against fleas. Always read the instructions and never double the dose to make up for a missed application.

Can I use a tick treatment for dogs on a cat?

No, definitely not without checking first. The Advantix products featured here indicate high toxicity for cats. Never share a pipette or collar between species and seek professional advice promptly if accidental contact occurs.

Does a flea collar for dogs mean I don't need to clean the house?

No. In the event of an infestation, wash fabrics at a temperature suitable for their care, thoroughly vacuum the areas your pet frequents and follow the recommendations on the product. Treating your dog and cleaning its environment are two different steps, but both are essential to get rid of the problem.