you shouldn't comment on something you know nothing about. first of all the product is meant to be used 24 hours a day, 7 days a week to clean the air in your home and can be used to clean every surface in your home more effectively than any other product on the market. It removes up to 99.997% of the dirt from the air and is comes with a 25 year service warranty at no additional cost to you and costs less than most high end Air purifiers and vacuums while doing the job of both.