Canadian Brand. Cats spend 30% of their time grooming. Up to 2/3 of the hair shed is swallowed during these grooming sessions, leading to hairballs in the digestive tract. Proper nutrition can reduce hairballs and promote healthy digestion. INDOOR HAIRBALL is for adult indoor cats from 1 to 10 years old that are prone to hairballs. INDOOR HAIRBALL promotes dental health and supports healthy digestion. It provides 100% complete and balanced nutrition while helping to eliminate hairballs.