Works great. I love the glow, like a little fireplace! It says not to set it on surfaces that can be damaged by water so I have it in my office on a glass d3sk. See my photos to see why! It seems the way you orient the inner cap determines how much mist you get. I can get a volcano going, lol. It comes with many more salt rocks than needed, a measuring cup. It has auto shut off when water gets low. Love it, actually. Makes a low hum (quiet)