Comfortis protects dogs and cats against fleas. Comfortis is the first flavored tablet that kills fleas and prevents infestations
on pets for a full month. Comfortis also: 1) Starts killing fleas within 30 minutes 2) Kills fleas before they lay eggs 3) Can’t be
washed, rubbed or shaken off. For cats 4.1-6 lbs and dogs 5-10 lbs.