Every scoop of Hairball Buster is packed with 2 billion CFUs of digestion supporting, furball-busting probiotic powder formulated specifically for cats. Fish oil, flax seed and several strains of probiotics join forces in Hairball Buster. Our product may help Fluffy pass hair before it becomes a hairball. In addition to its work on hairballs, Hairball Buster works to support digestion and helps promote healthy skin and shiny coat.