Frontline Spot on Large Dog is for the prevention of infestations by Fleas and Ticks in dogs, and is part of a treatment strategy for Flea Allergy Dermatitis in dogs where this has been previously diagnosed by a Veterinary Surgeon. Frontline Spot On Dog controls infestations with biting lice on dogs. It is effective against fleas for approx 2 months and ticks for up to 1month in dogs. It also controls lice within 48 hours. Routine treatment is advised to prevent flea infestations.

How does Frontline Spot On Large Dog work?

Frontline Spot On Dog acts by direct contact with parasites and not via your pet’s bloodstream. It kills fleas within 24 hours without requiring them to bite your pet.

1.Frontline Spot On is applied externally to your pet’s skin on the back of the neck.
2.The active ingredient, fipronil, quickly dissolves into the natural oils of your pet’s skin and coat, dispersing over the entire body surface within 24 hours and concentrating in the skin’s oil glands to form a reservoir.
3.Fipronil is then secreted with the natural oils of the skin and hair, continuously coating your pet’s skin and hair for several weeks after application – in fact it’s the longest-lasting spot on flea treatment available without prescription.