Two working modes: detection and timing modes work at the same time: one is that after the pet leaves the area, the deodorizer activates the deodorization mode; the other is that the cat air purifier works automatically every 10 minutes to ensure 24 hours of fresh air. Purify the air: Eliminate odors in a small area, only cover them not. The smell may not disappear completely on the first day of use, but after 2-3 days you will feel a significant difference. Using USB charging: This air freshener has a built-in 2600mAh battery , low power consumption, long battery life, charging via USB cable (included), and it can be used for 2-3 days after fully charged. Suitable for Pets: The smart pet odor filter is equipped with a highly sensitive motion sensor, which can detect pets' movements in a wide-angle range. 360 intelligent identification and automatic switching of the scent purifier to prevent cats from being afraid. Easy to use: the smart scent purifier for pets intelligently recognizes, purifies the air and operates at low noise. Suitable for litter box, cat litter, dog litter, pet toilet surroundings, etc.