| Sentinel Spectrum Blue For Dogs 50.1-100 Lbs 12 Chews. "Sentinel Spectrum is a palatable, beef-flavored oral treatment for dogs. The monthly formula protects canines against fleas, heartworms, as well as intestinal worms such as roundworms, hookworms, whipworms, and flea eggs."... - Sentinel Spectrum Blue For Dogs 50.1-100 Lbs 12 Chews. |