General description Johnson's has launched the 4fleas Spot-on for Cats, a dual-action flea control product exclusive to the pet trade and part of the award-winning 4fleas range. This fast-acting solution kills fleas on contact, eliminating the need for fleas to bite. It stops fleas from biting in just 3 to 5 minutes and kills flea larvae within 20 minutes of contact in the area around your pet, including their bedding and resting areas. The product is indicated for use in cases of flea allergy dermatitis and provides up to 8 weeks of protection. Technical specifications Active ingredient: 80mg Effectiveness: Kills 98-100% of fleas within 12 hours Protection duration: Up to 8 weeks