Never thought about pest controller with air purfication function. This 5 waves ultrasonic pest repeller with air purificaiton give your a home even your business a peace of mind. With constant changing of electric waves, give no pest any ablity to inhabit. The wide range 100 meter and 360 degree covers all your need for pest control. Most of all, it is ABSOULTELY HUMAN FREINDLY!!! Genius is all i can say!!!!