Adult fleas, ticks and biting lice can be combated with Frontline Spot On Cat. You easily apply the remedy to your cat's skin just in front of the shoulder blades. Here he cannot lick himself. The drops will work against fleas within 24 hours of application. After 48 hours, it also works against ticks and biting lice. Your cat will be protected against flea reinfestation for 5 weeks and against tick return for up to 4 weeks. Fleas and ticks on your dog? Then take Frontline Spot On Dog