Enjoy Avoderm Indoor Hairball Cat (6x3.5Lb). AvoDerm Indoor Hairball Care Formula is specifically formulated for the needs of your indoor adult cat. Cats are frequently grooming themselves, which can lead to a build-up of hairballs. This formulation helps to control hairball formations by adding our special blend of fiber sources. Note: description is informational only. Please refer to ingredients on the product before use. Please address any health or dietary questions to your health professional before using this item.