PetGuard Yeast and Garlic Powder, sprinkled on your pet's food, and Yeast and Garlic Wafers, given as a treat or reward, will nourish and strengthen your pet naturally with protein and the essential B-Complex Vitamins. Used regularly, Yeast and Garlic wilI help your pet be healthier, happier, more disease resistant and less prone to problems associated with infestation.