The INCREDiBALLS Scented Laundry Washing Balls Refill Pack by airpure is an eco-friendly laundry detergent in the form of blue pellets. This pack contains 4 balls with a capacity of 51-60 washes each, suitable for washing machines. The scent of the balls is 'clean skies', making them perfect for fresh and hygienic laundry. Each ball is manual and provides a powerful cleaning solution for your laundry needs.