Canadian Brand. Snack Station Covington Sweet Potato - Blueberry and Parsley is a high-fiber, high nutrient, teeth-cleaning chew. This soft dehydrated chew is perfect for sensitive tummies. Blueberry is an antioxidant and parsley is a natural breath freshener. They're rich in beta-carotene, vitamin A, potassium, phosphorus, iron, niacin, thiamin, and riboflavin.