The facts Extended protection Just one Bravecto chew protects your dog for 3 months against fleas and 4 months against deadly paralysis ticks. Starts working within hours Bravecto provides effective control of fleas within 8 hours of administration and effective control of pre-existing paralysis tick infestations within 24 hours. One very tasty oral chew Highly palatable tasty oral chew format for dogs. No mess to administer, no liquids to spill or transfer.