Kmart sell a 100L 'Bean Bag Refill' which is made of polystyrene. These are thousands of tiny white balls that will be around forever. I have found these many times while on hikes and beaches. They easily fly away as they are so small and light which also makes them very hard to collect and makes them susceptible to littering the environment. This also makes them easily consumed by wildlife. These need to be replaced by a more eco-friendly option that won't be such a huge harm to the environment.