| Sentinel Spectrum Yellow For Dogs 25.1-50 Lbs 6 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 Yellow For Dogs 25.1-50 Lbs 6 Chews. |