The Catit Design Senses Grass Garden Kit brings the nutritious benefits of the outdoors indoors. Grass is a natural source of fiber, which is known to help digestion and help prevent hairball buildups. The Kit is a safe and green way to great health for every cat. Ideal for indoor cats. Cats see and hear sights and sounds that are beyond our perception. They experience the world in ways we can only imagine with their unique sense of taste, touch and smell. Catit Design Senses products are made with your cat in mind and designed to appeal to all of your cat's senses. Catit Design Senses products can be used individually or combinred together to create a complete Sensory Activity Center for your pet.