Hill's Science Diet Indoor Adult is a dry cat food formulated specifically for adult cats living an indoor lifestyle, in a chicken recipe. It accounts for the lower activity levels and different digestive demands of indoor cats — particularly the tendency toward weight gain when energy intake isn't calibrated to reduced movement.

The formula features ActivBiome+, a blend of prebiotic fibres and antioxidants designed to support digestion, immune function, and organ health in one ingredient system. High-quality chicken protein supports lean muscle maintenance throughout adulthood. Omega-6 fatty acids and Vitamin E contribute to skin and coat condition, while natural fibre aids digestive regularity and simplifies litter box management.

Indoor cats live differently from outdoor cats, and their food should reflect that. Hill's has built this formula around those specific demands — calibrated energy density, digestive support, and a nutrient profile suited to the health patterns seen in cats that spend the majority of their time inside.