When I was looking for one of those automatic air freshener machines that you see in restaurants and other businesses, I decided to check with Long's Preferred Products. They specialize in Janitorial supplies. They had just what I was looking for. You can set this little machine on a table or shelf or you can mount it on the wall. I have these airfreshners all over my house. I love the way I can walk from room to room and smell a fresh, clean, scent.
You can purchase the freshener refill cans here also.
The machines/dispensers cost about $25 and the cans of air fresheners are approximately $3.95 each.
This is a small price to pay for constant fresh, clean, scented air. Right now, I am using Spiced Apple scent in them so that we have the Holiday aroma in the house.