A collection of 24 premium charcoal water filters from NISPIRA serves as replacements for Petmate filters. These filters are suitable for the Replendish and Mason fountain models. The high-quality activated charcoal effectively eliminates unpleasant tastes and odors from water, ensuring it remains fresh; it’s recommended to replace them every 2-4 weeks for optimal freshness. For best results, changing the filters every two weeks is advisable to maintain cleanliness. We guarantee complete customer satisfaction, with quality that matches or surpasses top national brands.