I have 2 and I love them! You can use any Glade Wisp refill. It has a nice glow that I was concerned would look fake. Turns out, it's not too bad. You can set it for the strength of smell and it will automatically turn off after 3 hours. I absolutely LOVE mine. I've also given them as hostess gifts when we go to someone's house for dinner. BOGO is worth trying them.