Andybev01 wrote:If you put it at the top of the stairs is it effective enough to make it all the way down to the bottom?
Hmmm... I guess Spooky will just have to make one and find out. I definitely don't have time. Here's video of the project. Shows it in action. More pointers in the comments section. I noticed the other day the grocery store near me sells dry ice from a machine. That would have to be way more effective.