A blend of direct fed microbial is important to support healthy digestive processes. Crucial to an animal"s gut are the "friendly bacteria" for microbial balance. Prebiotics (Fructooligosaccharides FOS) are added to this probiotics blend help increase the nutrients needed for specific bacteria to survive. Digestive enzymes are used to help break down food for proper digestion and absorption. The bacteria components of PrePro are freeze dried and stabilized with moisture scavenging silicates so they do not need to be refrigerated.