Keep your home smelling fresh with this set of 4 Replacement Carbon Filters. These filters are designed to work with Tower Ozone bins, and are also suitable for most other waste bins and food caddies. They combine with Ozone Filter Fresh technology to absorb unpleasant odors, remove moisture, and provide fresher air. The absorbent activated charcoal naturally eliminates smells from your bin and home. For optimum performance and maximum freshness, filters should be changed every 3 months. This pack includes 4 replacement filters, ensuring you have spares or can change filters in multiple bins.