96% Meat, Bones & Organs Infused With Probiotics. Boss Dog® Brand Boss Proballs™ are protein-based treats to support overall health and with a taste your dog is sure to enjoy! These delicious freeze-dried raw meatballs are packed with probiotics at over 1 Billion Probiotics per ounce! Free from corn, soy, and wheat, you can rest assured that our Boss Proballs™ delivers digestive benefits and contains wholesome ingredients. These treats are meat first and protein-rich to provide sufficient nutritional intake in a treat application! Over 1 Billion probiotics per ounce. Probiotics are the good bacteria in the gut that aid in digestion, support the immune system, and support better nutrient absorption! Protein-rich and nutrient-rich. Meat being first on the ingredient list is a testament to the high-quality protein content these treats deliver to your dog! No nonsense.