SENTRY Capguard (nitenpyram) Oral Flea Control Medication, 2-25 lbs, 6 count Treat Flea Infestations With One Easy Tablet Contains Nitenpyram, Veterinarian Recommended Fast acting, starts working in 30 minutes Kills Adult Fleas On Your Pet Easy-To-Dose Tablet Format, No Mess, Can't Rub Or Wash Off