SmartCat Kittys Garden Seed Refill Kit allows you to restock your Kittys Garden with 100% organic oats, wheat, rye, and barley and help boost digestion and reduce the occurrence of hairballs. Seeds grow in 4-6 days with the included peat pellets. Refill kit includes includes one bag of seeds and four peat pellets Oats, Wheat, Rye and Barley grow with 4-6 days Helps prevent ingestion of potentially toxic houseplants Helps prevent hairballs