PetBird Xpress stocks 1,000's of items including Nature Cluster. Quality Customer Care is our first priority - try calling us at 800-448-2014. Expect your Nature Cluster to leave our warehouse within 1 day. Its easy to track your shipment by clicking on MY ACCOUNT at the top of this page. PetBird Xpress is proud to represent PLANET. We never sell unproven off-brand products. We appreciate the opportunity to serve you! Join our 12,000 satisfied commercial and residential customers.