Simparica Trio is the ultimate monthly chew that offers broad-spectrum protection for dogs. This tasty, liver-flavored chew protects your dog from fleas, ticks, heartworms, roundworms, and hookworms with just one dose each month. Benefits &...

Simparica Trio is the ultimate monthly chew that offers broad-spectrum protection for dogs. This tasty, liver-flavored chew protects your dog from fleas, ticks, heartworms, roundworms, and hookworms with just one dose each month. Benefits &...