Boost your pet's immune system with our healthy and all natural pet supplement. K9 Biotics powder provides your pet with both probiotics and enzymes: the key to a strong and healthy immune system. This powder adds onto your pet's daily diet in areas not found in their other foods and treats. There's no yeast in this product, in any form. Watch how wonderful your pets feel having a healthy gut: no scratching, no biting at their paws, and much more. Diet plays a huge part of boosting your pet's immune system.