Enjoy fresh air with your fury friends with the core P350 Pet Care Air Purifier. Its non-woven Pre-filter captures pet-related airborne contaminants. The Main Filter captures at least 99.97% of airborne contaminants down to 0.3 microns in size. The Activated Carbon Filter with ARC Formula adsorbs pet odors and VOCs. The air purifier quickly refreshes medium-sized rooms like a kitchen or living room with its aerodynamic air duct and spiral 360 airflow while the convenient Check filter indicator reminds you when it might be time for a new filter.