HKM-307411 Sponge Filter Cotton Tray with Cleaning Kit – Pet Supplies Accessory SetIntroducing the HKM 307411 Sponge Filter Cotton Tray with Cleaning Kit an essential accessory set designed for pet owners who prioritize maintaining a clean and healthy environment for their furry friends. This versatile product features a five piece filter element and a one piece filter element, coupled with a durable sponge and tray. The HKM 307411 ensures maximum efficiency while filtering contaminants, keeping your pet's habitat fresh and safe.