Frontline XL Dog Combo For dogs weighing 40-60 kg Eliminates ticks, fleas and lice Prevents contamination of the habitat by flea eggs and larvae 3 pipettes of 4.02 ml FRONTLINE COMBO is active on adult fleas, their eggs and larvae, allowing a combined action on the animal and its environment. FRONTLINE COMBO: Eliminates fleas from the pet and protects it from re-infestation for approximately 8 weeks in dogs. Inhibits the development of flea eggs, larvae and pupae in dogs for 8 weeks, preventing contamination of the dogs environment for the same period. Eliminates ticks from your pet and protects against re-infestation for 4 weeks. Eliminates chewing lice.