Absorbent liner for Catch Basin (Catch Basin not included) Introducing the Porch Potty Catch Basin Liners, the ultimate solution for maintaining a clean and odor-free environment for your pet. These innovative liners are designed to make liquid collection and clean-up easier than ever. Each liner features a high-quality absorbent pad that efficiently traps all liquids, including urine, preventing sloshing and mess inside the catch basin —simply pull the drawstring tabs to close the bag, and you can transport it mess-free to the waste bin.  Each pack contains 15 liners, providing up to 2 months of usage depending on the frequency of use. For small dogs, each liner can last 3-5 days. Medium dogs may require a change every 2-3 days, while large dogs might need a new liner every 1-2 days. These liners are specifically designed for use with both the Porch Potty Standard and Small models. Please note that the catch basin itself is not included.