AirGuard is designed to complement the BioEm natural patented air disinfectant and effectively reduce the amount of indoor bacteria, kill the virus and reduce allergens. More effective decomposition of formaldehyde and other TVOC and most of the home odor, such as: smoke, food flavor, garbage flavor, pet smell and so on ... ... AirGuard indoor air disinfection and purification machine, the effective range of about 500 square feet (50 square meters). High-performance sterilization range of 300 square feet (30 square meters). AirGuard has proven that the BioEm air disinfectant can be used to clean indoor space, eliminate bacteria and viruses in the air, deodorize, meet the IAQ's Excellence class level. Lab test: Measure the room by 300 sq feet. Test Report: IPJ16-113-RP003, Acoustics and Air Testing Laboratory Co. Ltd.