COMPATIBILITY - These activated carbon filters are designed for Petmate Booda Dome Clean Step Cat Litter Box. Pre-cut to fit and install directly. PACKAGE CONTENT - Pack of 4 activated carbon filters. Each filter can be used for about 2–3 months, depending on usage and conditions. Replace when the filter loses effectiveness. ODOR CONTROL - Activated carbon filters effectively absorb odors to improve indoor air quality by removing the litter box smell. MATERIALS AND CONSTRUCTION - Fibrous activated carbon as the adsorption material. - High-density polymer binding material to attach carbon to the fiber. - Filter thickness: 0.5 cm (0.2 in) for efficient odor absorption. EASY INSTALLATION AND FIT - Pre-cut for straightforward installation. Due to its unique size, the filter is compatible with Petmate Dome Cat Litter Box. - Can be made suitable for Petmate basic cat boxes by trimming. USE SCENARIOS - Everyday odor control: Use in a single-cat household to minimize litter box smells in living areas. - Multi-room homes: Helps maintain air quality in rooms with limited ventilation by reducing odors from the litter box. - Quick compatibility tweaks: If you own a Petmate Dome Cat Litter Box, simply cut the filter to fit other Petmate basic boxes as needed.