Give your cats and dogs the fresh, clean drinking water they need with our premium 12-pack replacement filters, precision-engineered exclusively for the oneisall 67oz/2L stainless steel pet water fountain. We designed these filters to address the most common concerns of pet parents: inconsistent water quality, hard water buildup, and pets refusing to drink tap water due to unpleasant tastes or odors. Our filters feature a reliable triple-action filtration design, crafted with pet-safe materials to deliver consistent water quality with every use. Each filter works to capture loose hair, food debris, and sediment, while reducing chlorine, organic contaminants, and excess calcium and magnesium from tap water. This results in better-tasting, cleaner water that can encourage your pets to drink more regularly, supporting their overall hydration and long-term wellness. Each package contains 12 individually sealed filters, keeping every unused filter fresh and protected until you're ready to use it. For optimal performance, we recommend replacing your filter every 2 to 4 weeks, based on your household water quality and the number of pets using the fountain. Prior to first use, simply rinse the filter thoroughly under running water for 30 seconds to remove any residual carbon dust, then install it into your fountain's filter compartment. We use only BPA-free, non-toxic materials that are safe for daily use with cats and dogs of all ages and breeds. Unused filters should be stored in a cool, dry place to preserve their filtration effectiveness. If you have any questions about compatibility, installation, or use, our team is here to assist you.