Cat Grass for Indoor Cats Kit. CERTIFIED ORGANIC NON-GMO WHEATGRASS KIT with EVERYTHING you need to be successful in growing your own wheatgrass. Cats crave this sweet taste of grass as it adds natural nutrients and fiber to their diet and aids digestion (dogs and rabbits too!) It also naturally reduces hairballs in them too. Growing your own grass for a fraction of the cost of buying store-bought always feels good and is a super easy and fun project for kids and adults alike. Even watching the soil expand is magical