| Compare Bio Spot® Spot On® Flea & Tick Control for Dogs to the Leading Veterinary Brands* | | Farnam Bio Spot® Spot On® | Merial Frontline® Plus | Merial Frontline® Top Spot® | Bayer K9 Advantix® | Bayer Advantage® | | Active Ingredients | Permethrin and (S)-Methoprene | Permethrin and (S)-Methoprene | Fipronil and (S)- Methoprene | Fipronil | Permethrin and Imidacloprid | Imidacloprid | | Kills & Repels Fleas | X | X | X | X | X | X | | Kills & Repels Ticks | X | X | X | X | X | | | Kills Flea Eggs & Flea Larvae | X | X | X | | | | | Kills & Repels Mosquitoes | X | X | | | X | | | Kills Dog Lice & Ear Mites | X | ? | ? | ? | ? | | | | | | | | | | All registered trademarks are property of their respective owners. |