Webbox Cat Grass 120g is suitable for all cats. With this complete easy-grow kit, you can grow your own grass. The kit comes ready to grow. Webbox Cat grass helps eliminate hairballs. It is a 100% natural and safe alternative to house plants. Directions for Use: Push through the marked six drainage holes at the bottom of the tray and place onto the lid to catch excess water. Open the seed bag and mix the seeds with the mineral soil. Pour approximately 400ml of water into the tray. After three to four days, the Cat Grass will begin to grow. Ensure the product is kept damp in a warm well­lit location away from direct sunlight.