Keep your furbaby’s water clean and fur-esh with the Neareal Stainless Steel Cat Water Fountain Replacement Filters & Pre-Filter Sponges. These filters are compatible with the Neareal 3.2 L/108 oz Stainless Steel Cat Water Fountain (sold separately). The carbon filter helps remove odor, soften water, and improve the taste and quality of the water. The filter sponge helps capture pet hair, dirt, and food particles to keep the water clean and appealing to your best friend. Regularly replacing the filters can help maintain water quality to encourage your furry friend to drink up.