Popular: heartworms, fleas & ticks, or randomize

Frontline Plus

Activyl Tick Plus

Interceptor

Advantage Multi

Usage Topical Topical Oral Topical
Availability Non-prescription Non-prescription Prescription Prescription
Adult fleas
Flea eggs
Ticks
Heartworms
Roundworms
Hookworms
Tapeworms
Whipworms
Chewing lice
Ear mites
Mosquitos