Bravecto's powerful topical solution protects cats from fleas and ticks. In just 8 hours, Bravecto kills 100% of your cat's fleas and continues to kill fleas and ticks for up to 12 weeks. Bravecto is used on cats and kittens weighing 2.6 lbs. or more and on kittens older than 6 months. Bravecto is not recommended for breeding, pregnant and lactating cats. Use with caution in cats with a history of neurologic abnormalities.