They work freakishly well. If you want to play with one, spencers (store in most malls) sells them. They are not as big there, but these things do actually work. Also, you can buy just the thing that makes the smoke on that site. You can also get bigger ones.WOW!
Looks just like what I want and inexpensive enough for my budget. With a wireless controller!!
After I get one I'll report back on how well it works.
Most run on a DC power supply, so probably. Basicly they are tiny speakers with a fairly large diaphram that produces ultrasonic waves that mist the water.I like those nebulizer things. Dry Ice fog will hang longer and fall further, but I think the effect of a low hanging fog around the top of the cauldron should be quite nice.
It would be interesting to see what the inside of one of those units is like. I'd like to take one apart and see if it can be battery operated.
< Yeah that's why my folks never bought me new toys>