Zodiac Spot On Plus Flea & Tick Control for Cats & Kittens Under 5 Poundsr, 4-Month Supply Kills fleas and deer ticks for up to 1 month Kills and repels mosquitoes for up to 18 days Kills flea eggs for up to 1 month Stops flea life cycle and prevents reinfestation Pet Specifix applicator shape helps prevent misuse on dogs