Complete pet food for cats living indoors aged between 1 and 10 years. Maintaining ideal weight With a moderate calorie supply and the addition of L-carnitine to help mobilise fat stores, Indoor 27 helps maintain your cat’s ideal weight. Hairball Regulation Hairball regulation A combination of non-fermentable fibres and beet pulp help stimulate intestinal transit and can assist in the elimination of ingested hairs.