The PETKIT Clay Litter Sifter is exclusively designed for the self-cleaning and self-sealing cat litter box PUROBOT ULTRA, providing efficient filtration of fine clumping litter such as mineral and bentonite litter with a particle size of up to 3 mm. With a special honeycomb structure, it precisely separates clumps from clean litter, reduces waste, and extends the usability of the litter while maintaining a hygienic environment for your cat. Made from durable, washable ABS plastic, the sifter is odor-resistant and easy to clean, preventing the buildup of unpleasant odors. It is easy to install and remove, securely locking in place to ensure effortless maintenance. Note: This sifter is only compatible with PUROBOT ULTRA and is not suitable for PURA MAX, PURA MAX 2, or PUROBOT MAX PRO. The PETKIT Clay Litter Sifter is the perfect choice for cat owners who prefer fine clumping litter and are looking for a highly efficient filtration system to achieve a cleaner and more hygienic litter box.