FRONTLINE Plus Flea & Tick Treatment for Cats and Ferrets provides fast and effective protection against fleas, ticks, and lice. Suitable for cats and ferrets over 8 weeks old, it kills existing parasites within 24 hours and prevents re-infestation for up to 4 weeks. The double-action formula targets both adult fleas and their eggs, breaking the life cycle for lasting control. Each pack contains 6 easy-to-apply pipettes for long-lasting, hassle-free parasite prevention.