These pet soft chews feature six strains of probiotics that include Bacillus subtilis. Together, these probiotics support gut function, along with maintaining proper gut flora to support normal digestion. With Probiotic Bites, you'll enjoy feeling a sense of relief from supporting your furry fave's gut, GI tract, and immune function. Plus, we know your pet has an "allergy" to bad flavors. So, your dog will feel happy and spoiled well with all the best special treatment thanks to this delicious flavor that hits the spot.