Perfect for School Classrooms , Our patented Air and Surface Purifiers kill 99.9999 percent of all Viruses including the Covid 19 Virus, Mold, and Bacteria in less then an in hour. Each unit handles up to 3,000 Sq Ft and is quite and easy to clean. Designed by NASA this portable surface and air purifier usesActivePure® Technology to eliminate contaminants on surfaces and in the air, while reducing odors caused by these contaminants.