The Xiaomi BHR9968TY is a replacement filter specifically designed for the Xiaomi Smart Pet Air Purifier to maintain a clean home environment for pet owners. It utilizes a three-layer filtration system consisting of a primary filter, high-efficiency HEPA media, and activated carbon, which together capture 99.97% of particles as small as 0.3 μm. This combination effectively removes pet hair, dander, dust, and pollen, while the carbon layer neutralizes unpleasant odors and volatile organic compounds. Measuring 17.5 cm in diameter and 20.6 cm in height, this white filter weighs approximately 0.5 kg and fits seamlessly into the device without the need for specialized tools. Depending on how often you use your purifier, the filter typically lasts between 6 and 12 months before needing replacement, making it a practical choice for those looking to reduce airborne allergens and keep their living space fresh.