Frontguard Plus Spot On for cats and kittens 8 weeks and older kills ticks and fleasProduct details Frontguard Plus for cats and kittens 8 weeks and older Stop and prevent the spread of fleas and ticks. Complete flea and tick elimination, including adults, larvae, and eggs. Prevents growth at all stages in the life cycle of fleas and ticks. Used to control and prevent the recurrence of fleas and ticks over a period of 1 month. Starts to work to kill fleas within 24 hours. Effective for 1 month Still effective even when the cat is