Two working modes: The sensing and timing modes work at the same time: one is that after the pet leaves the area, the air freshener will turn on the deodorizing mode; the other is that the Cat air purifier will automatically work every 15 minutes to ensure 24 hours of fresh air. Purify the air: Eliminate odors in a small area, do not cover them. The odor may not disappear completely on the first day of use, but after 2-3 days, you will feel a significant difference. Using USB charging: Low power consumption, long battery life, charging via USB cable (included), and it can be used for 15 days after a full charge. Suitable for pets: The smart pet odor filter is equipped with a highly sensitive motion sensor, which can detect pet movements in a wide-angle range. 360° intelligent identification and automatic switching of the odor purifier to prevent cats from being scared. Easy to use: The smart pet scent purifier intelligently recognizes, purifies the air, and operates at low noise.