We have added 4 Defenders to Avanti Salon and they are working well. We use them on the Medium setting. Our employees really appreciate the extra layer of protection that the Defenders provide. Although we sanitize surfaces throughout the day and fog every night, knowing that the air quality is being improved throughout the day is a nice added sense of security. Our guests feel the same way as our staff does. One comment we received from a guest was, "I would much rather see those air purifiers throughout the salon rather than vases or plants". — Tony Paterniti, Avanti Salon