Royal Canin Indoor is a complete feed for indoor cats ranging from 1 to 7 years of age. A very useful function of this food is the reduction in faecal smell, unsuitable diets generally result in smelly faeces, Indoor uses easily digestible proteins & selected fibres to help maintain a health digestive environment. Hairballs are also kept to a minimum by stimulating intestinal transit with fermentable & non-fermentable fibres. Another key factor of the food is that it helps maintain a cats urinary health, a health urinary system can help prolong a cats life dramatically.