Natural Dental Dog Treat No Wheat, Soy, Or Corn In Them Due To Their Little Nutritional Value And Are Common Allergens As Well No Animal By-Products Or Harmful Preservatives, And With Only All Natural Human Grade Ingredients Kong Dental Chews Are The Ideal Anytime Treat; With Real Chicken Flavor Dogs Love Contains Stay-C A Patent Protected Bio-Available Form Of Vitamin C Fights Plaque And Tartar Buildup; Reduces Chances Of Gum Disease While Inhibiting The Growth Of Dental Bacteria. Helps Reduce Halitosis (Bad Doggy Breath) Comes In Two Sizes: Small, Medium/Large. Made In Usa