Oh, I've found the product... it's just a dry ice based chiller. The dry ice isn't being consumed to create the
fog it's being used to cool the chemical
fog so that the
fog falls low. That means the dry ice will last a long time. You
plug your chemical fogger into this chiller (not included). Fill it with dry ice, use a special low lying
fog fluid, and the chiller helps the chemical
fog lay low like a dry ice
fog. It's very safe. The performance depends a lot depending on your fogger and the fluid you use. It will stay low, but it won't stay as low as a true dry ice
fog, and Unlike dry ice
fog it will kick up as actors walk through it. However the special fluid is designed so that once it gets kicked up and warms a little it dissipates quickly. Lot's of other options out there. Do a search and you'll find a discussion of building your own chiller that uses regular ice cubes. You should also be able to find some discussions on what people think of chilled
fog. Some people like it some don't. It's not the same, but it's an interesting alternative that can work depending on the show. There are a couple of other places that sell chillers. There are also a couple of all
in one fogger and chiller units, some are dry ice some normal ice, some both.